Complete Stone Guide
Diamonds & Gemstones
The definitive guide to every stone you will encounter in Indian jewellery — from the science of diamonds and the 4 C's to traditional kundan craft, astrological Navratna, and how to avoid getting cheated. Whether you are buying an engagement ring or a bridal set, this is everything you need to know.
In This Guide
1. What Makes a Diamond Special
2. The 4 C's of Diamonds
3. Diamond Shapes
4. Natural vs Lab-Grown Diamonds
5. Diamond Certification
6. Diamond Fluorescence
7. Diamond Pricing
8. Buying Diamonds in India
9. Ruby (Manik)
10. Emerald (Panna)
11. Sapphire (Neelam)
12. Pearl (Moti)
13. The Four Precious Stones
14. Kundan Stones
15. Polki — Uncut Diamonds
16. CZ (Cubic Zirconia)
17. Moissanite
18. Meenakari (Enamel Art)
19. Stone Weight vs Gold Weight
20. How to Spot Fake Stones
21. Stone Settings Explained
22. Navratna — The Nine Astrological Stones
23. Price Comparison Across Stones
1. What Makes a Diamond Special
A diamond is pure carbon — the same element in pencil graphite — arranged in a rigid three-dimensional crystal lattice where each carbon atom bonds to four neighbours in a tetrahedral structure. This arrangement, formed under extreme pressure (45-60 kilobars) and temperature (900-1300°C) roughly 150-200 kilometres below the Earth's surface over 1-3 billion years, produces the hardest naturally occurring substance known to science.
Diamond rates 10 on the Mohs hardness scale — the maximum. It is about 4 times harder than sapphire (9) and roughly 58 times harder than anything else in nature. Only another diamond can scratch a diamond. This extreme hardness is why diamonds maintain their polish and brilliance for centuries without degrading.
Three optical properties make diamonds uniquely beautiful:
Brilliance
The white light reflected from the surface and interior of the diamond. A well-cut diamond acts like a hall of mirrors, bouncing light internally before returning it to your eye. Diamond has a refractive index of 2.417 — higher than nearly all gemstones — meaning it bends light more dramatically and traps it inside longer.
Fire
The rainbow flashes you see when a diamond moves. Diamond has a dispersion of 0.044, meaning it splits white light into spectral colours (like a prism). When light enters a diamond, it separates into red, orange, yellow, green, blue, and violet — then exits as colourful flashes. This is what makes diamonds "sparkle" differently from glass.
Scintillation
The pattern of light and dark areas, and the flashes of light, when the diamond or the observer moves. A well-cut diamond has a balanced pattern of bright and dark facets that creates a dynamic "twinkling" effect. Poor scintillation means the diamond looks dull or has dark patches (known as "light leakage").
These three properties together — brilliance, fire, and scintillation — are collectively called light performance, and they are almost entirely determined by one factor: how well the diamond is cut. This is why Cut is the most important of the 4 C's.
2. The 4 C's of Diamonds
Established by the Gemological Institute of America (GIA) in the 1950s, the 4 C's are the universal standard for evaluating diamonds. Every diamond in the world is graded on these four parameters. Understanding them is the single most important thing for any diamond buyer.
1Cut — The Most Important C
Cut does not refer to the diamond's shape (round, oval, etc.) but to how well its facets interact with light. A diamond's cut grade is determined by its proportions (table size, crown angle, pavilion depth), symmetry (alignment of facets), and polish (smoothness of facet surfaces).
When a diamond is cut too shallow, light leaks out the bottom. When cut too deep, light escapes out the sides. Only when proportions are in the ideal range does light enter through the top (table), bounce off the internal facets, and return back through the top — maximizing brilliance, fire, and scintillation. A poorly cut 2-carat diamond can look duller than a well-cut 1-carat stone.
Always prioritize cut above all other C's. You can go lower on clarity and colour and the diamond will still look beautiful, but a poor cut cannot be compensated by high grades in other areas. A D-colour, FL-clarity diamond with a Poor cut will look lifeless.
| Cut Grade | Light Performance | Description | Price Impact | Recommendation |
|---|---|---|---|---|
| Ideal / Excellent | Maximum | Reflects nearly all light entering the diamond. Exceptional brilliance, fire, and scintillation. Only the top 3-5% of diamonds earn this grade. | Highest (15-20% premium) | Best choice if budget allows |
| Very Good | Excellent | Reflects most light. Nearly as brilliant as Ideal to the naked eye. Minor deviations in proportions visible only under analysis. | 5-10% less than Ideal | Best value — looks identical to Ideal in most cases |
| Good | Good | Reflects a majority of light. Slight light leakage visible under controlled conditions. Still a bright, attractive diamond. | 15-25% less than Ideal | Acceptable for budget buys |
| Fair | Moderate | Reflects some light. Noticeable light leakage. Diamond may appear slightly dull compared to higher grades. | 30-40% less than Ideal | Not recommended |
| Poor | Low | Most light leaks out the bottom or sides. Diamond looks dark, glassy, or lifeless. | Lowest | Avoid entirely |
Note: GIA only assigns cut grades for round brilliant diamonds. Fancy shapes (oval, cushion, pear, etc.) do not receive an official cut grade on GIA certificates — for those, look for symmetry and polish grades of "Excellent" or "Very Good" and examine the diamond visually or via video.
2Clarity — Internal Purity
Almost all diamonds contain tiny natural imperfections called inclusions (internal) and blemishes (surface). These formed during the diamond's crystallization billions of years ago — tiny crystals, feathers, clouds, or pinpoints trapped inside. Clarity measures how many of these imperfections exist, how large they are, their position, and how much they affect the diamond's appearance.
The key concept is "eye-clean" — whether inclusions are visible to the unaided eye when viewing the diamond face-up at a normal distance (about 25cm). Any diamond that is eye-clean will look flawless to anyone looking at your jewellery. Paying extra for grades above eye-clean is paying for differences only visible under 10x magnification.
| Grade | Full Name | Description | Eye-Clean? | Price vs VS2 |
|---|---|---|---|---|
| FL | Flawless | No inclusions or blemishes visible under 10x magnification. Extremely rare (less than 0.1% of diamonds). | Yes | +80-100% |
| IF | Internally Flawless | No inclusions under 10x. Only insignificant surface blemishes. Very rare. | Yes | +60-80% |
| VVS1 | Very Very Slightly Included 1 | Minute inclusions extremely difficult for a skilled grader to see under 10x magnification. | Yes | +30-50% |
| VVS2 | Very Very Slightly Included 2 | Minute inclusions very difficult to see under 10x. Slightly more visible than VVS1. | Yes | +15-25% |
| VS1 | Very Slightly Included 1 | Minor inclusions difficult to see under 10x magnification. Invisible to the naked eye. | Yes | +5-10% |
| VS2 | Very Slightly Included 2 | Minor inclusions somewhat easy to see under 10x. Still invisible to the naked eye. This is the benchmark grade. | Yes | Baseline |
| SI1 | Slightly Included 1 | Noticeable inclusions under 10x. Usually eye-clean in diamonds under 1 carat, may not be in larger stones. | Usually | -15-25% |
| SI2 | Slightly Included 2 | Inclusions easily visible under 10x. May be visible to the naked eye, especially in step cuts and larger diamonds. | Sometimes | -25-35% |
| I1 | Included 1 | Inclusions visible to the naked eye. May affect transparency and brilliance slightly. | No | -50-60% |
| I2 | Included 2 | Obvious inclusions that affect brilliance. Easily visible without magnification. | No | -65-75% |
| I3 | Included 3 | Prominent inclusions that severely affect transparency, brilliance, and even durability. | No | -75-85% |
Best value recommendation: VS1-VS2 for diamonds 1 carat and above. SI1 for diamonds under 1 carat (check that it is eye-clean). There is no visual benefit to buying FL/IF/VVS unless you are buying for collection or investment purposes. The 30-100% premium for grades above VS1 buys you absolutely nothing visible to the human eye.
3Colour — The Whiteness Scale
Diamond colour is graded on a scale from D (completely colourless, like pure water) to Z (light yellow or brown tint). The less colour a diamond has, the more valuable it is, because colourless diamonds allow more light to pass through, enhancing brilliance and fire. The scale starts at D (not A) because earlier grading systems used A-B-C inconsistently.
Colour differences between adjacent grades (e.g., G vs H) are extremely subtle and almost impossible to detect once the diamond is set in jewellery. Even trained gemologists grade colour by comparing the diamond upside-down against a pure white background — because differences are invisible face-up.
| Range | Grades | Appearance | Price Impact | Best For |
|---|---|---|---|---|
| Colourless | D, E, F | Absolutely no colour. Icy white. D and E are virtually identical; F has the slightest trace detectable only by expert graders. | Highest (D is 30-50% more than G) | Collectors, platinum/white gold settings where colour is most visible |
| Near-colourless | G, H, I, J | Face-up, these look colourless to the untrained eye. Trace of warmth visible only when compared side-by-side with D-F diamonds against a white background. Once set, G-H appear white. | G is ~20-30% less than D. J is ~40-50% less than D. | Best value range. G-H for white gold/platinum, I-J for yellow/rose gold |
| Faint | K, L, M | Slight yellow or warm tint visible to the naked eye, especially in larger stones. Can appear intentionally warm in yellow gold settings. | 60-70% less than D | Yellow gold settings, vintage-style pieces, budget engagement rings |
| Very Light | N to R | Noticeable yellow or brown tint. Visible in any setting. | 70-80% less than D | Not recommended for most buyers |
| Light | S to Z | Obvious colour. However, if strong enough, these can be marketed as "fancy light" colours and actually increase in value. | Lowest (or high if near fancy) | Avoid unless seeking fancy colour |
Best value recommendation: G or H colour. These appear colourless once set in jewellery and cost 20-35% less than D-F. If setting in yellow or rose gold, you can comfortably go to I-J since the warm metal tone masks any faint warmth in the diamond. Paying the premium for D-E colour is only justified for platinum solitaire engagement rings where the diamond is the sole focus.
4Carat — Weight, Not Size
Carat is a unit of weight, not physical size. 1 carat = 0.2 grams = 200 milligrams. The word comes from the carob seed, which was historically used as a counterweight on balance scales because carob seeds were believed to be uniform in weight.
Two diamonds of equal carat weight can appear very different in size depending on their cut proportions and shape. A deep-cut 1-carat round diamond might have a 5.8mm diameter, while an ideal-cut 1-carat round might have a 6.5mm diameter — the ideal-cut looks visibly larger even though it weighs the same.
Critical concept — exponential pricing: Diamond prices increase exponentially, not linearly, with carat weight. A 1-carat diamond does not cost twice as much as a 0.5-carat diamond of the same quality — it costs roughly 3-4 times as much. This is because larger rough diamonds are exponentially rarer in nature.
| Carat | Diameter (Round) | Approx. Price (G-VS2) | Price/Carat | Visual Size |
|---|---|---|---|---|
| 0.30 ct | 4.3 mm | Rs 25,000-40,000 | Rs 80K-1.3L/ct | Small — delicate earrings, stackable rings |
| 0.50 ct | 5.1 mm | Rs 55,000-90,000 | Rs 1.1L-1.8L/ct | Medium — classic solitaire look |
| 0.70 ct | 5.7 mm | Rs 1,00,000-1,70,000 | Rs 1.4L-2.4L/ct | Noticeable — good presence on hand |
| 1.00 ct | 6.4 mm | Rs 2,00,000-3,50,000 | Rs 2L-3.5L/ct | The benchmark — impressive solitaire |
| 1.50 ct | 7.3 mm | Rs 4,50,000-8,00,000 | Rs 3L-5.3L/ct | Large — statement piece |
| 2.00 ct | 8.1 mm | Rs 8,00,000-16,00,000 | Rs 4L-8L/ct | Very large — luxury, rare |
| 3.00 ct | 9.3 mm | Rs 20,00,000-50,00,000+ | Rs 6.6L-16L+/ct | Exceptional — extremely rare |
Smart buying tip: Buy "shy" of major carat thresholds. A 0.90-0.99 carat diamond looks nearly identical to a 1.00 carat diamond but costs 15-20% less, because there is a steep price jump at the 0.50, 1.00, 1.50, and 2.00 carat marks. Cutters actively try to hit these thresholds, sometimes sacrificing cut quality to preserve weight — so a well-cut 0.90 can actually outperform a poorly-cut 1.00.
3. Diamond Shapes
Round Brilliant accounts for about 75% of all diamonds sold. But fancy shapes offer unique aesthetics, often appear larger per carat, and typically cost 20-40% less than round. Here is every major shape:
Round Brilliant
57-58 facetsThe classic. Mathematically optimized for maximum brilliance and fire. Most popular shape worldwide. Sets the benchmark for pricing — all other shapes are cheaper. Best for: those who want maximum sparkle and a timeless look.
Princess
50-58 facetsSquare shape with pointed corners and brilliant-style faceting. Second most popular shape. Sharp, modern aesthetic. Excellent brilliance. Corners are vulnerable to chipping — needs protective setting (V-prongs). Best for: those who want a contemporary, geometric look.
Oval
56-58 facetsElongated round shape. Appears 10-15% larger than round of same carat weight due to larger surface area. Elongates the finger. Can show a "bowtie" (dark area across the center) if poorly cut. Best for: those who want the brilliance of round but a larger-looking, elegant shape.
Cushion
58-64 facetsSquare or rectangular with rounded corners — like a pillow. Vintage, romantic aesthetic. Two types: cushion brilliant (chunky flashes) and cushion modified brilliant (crushed ice appearance). Best for: those who love antique/vintage style with soft lines.
Emerald
44-50 facetsRectangular step-cut with cropped corners. Instead of brilliance, it produces broad "hall of mirrors" flashes called "light corridors." Clarity is more important here — inclusions are more visible in step cuts. Best for: those who appreciate understated elegance and architectural geometry.
Pear
56-58 facetsTeardrop shape — one pointed end, one rounded end. Very flattering on the hand, elongates the finger. Can also show a bowtie. The pointed end must be protected with a V-prong. Best for: pendants, earrings, and those who want a unique, feminine shape.
Marquise
56-58 facetsFootball-shaped with two pointed ends. Looks the LARGEST per carat of any shape due to its elongated form. A 1-carat marquise can appear 15% larger than a 1-carat round. Both points need V-prong protection. Best for: maximizing perceived size, creating a dramatic, regal look.
Asscher
50-58 facetsSquare step-cut — essentially a square emerald. Art Deco aesthetic with mesmerizing concentric square patterns. Developed by the Asscher brothers in 1902. Like emerald cuts, clarity is important. Best for: Art Deco lovers, those who want vintage glamour.
Radiant
62-70 facetsRectangular or square with trimmed corners and brilliant-style faceting. Combines the outline of an emerald cut with the sparkle of a round brilliant. Very forgiving of colour and clarity. Best for: those who want a rectangular shape but do not want to sacrifice brilliance.
Heart
56-58 facetsThe ultimate symbol of love. Requires high-quality cutting for symmetrical lobes. Best above 0.50 carat — smaller hearts do not display the shape clearly. Best for: romantic statement pieces, especially pendants.
4. Natural vs Lab-Grown Diamonds
Lab-grown diamonds (also called lab-created, synthetic, or man-made diamonds) are chemically, physically, and optically identical to natural diamonds. They are made of pure carbon in the same crystal structure and have the same hardness (10 Mohs), refractive index (2.417), and thermal conductivity. They are real diamonds — the only difference is origin.
Two methods are used: HPHT (High Pressure High Temperature), which replicates how diamonds form underground, and CVD (Chemical Vapor Deposition), which grows diamond atom-by-atom from a carbon-rich gas. CVD is more common today and produces higher-quality stones. A 1-carat lab diamond takes 6-10 weeks to grow.
Lab-grown diamond prices have dropped 60-70% since 2020 and continue to fall as production scales up. This makes them excellent for beauty and daily wear but poor for investment or resale.
Natural Diamond
- •Formed over 1-3 billion years underground
- •Finite supply — mines are depleting
- •Retains 30-50% resale value
- •Carries emotional/heritage significance
- •Certified by GIA, IGI, HRD, SGL
- •Costs Rs 2-5 lakh per carat (G-VS2)
- •Undetectable without lab equipment
- •Strong second-hand market exists
- •Traditional engagement ring choice
- •Value appreciates slowly over decades
Lab-Grown Diamond
- •Grown in a lab in 6-10 weeks
- •Unlimited supply — prices keep falling
- •Very low resale value (10-20%)
- •Identical appearance to natural
- •Certified by IGI (mostly), some by GIA
- •Costs Rs 20,000-50,000 per carat
- •Has inscription "LG" on girdle
- •No established resale market in India
- •Growing popularity for daily-wear jewellery
- •Value depreciates as production increases
Our honest take: If you want a diamond primarily for its beauty and are on a budget, lab-grown is a rational choice — you get a larger, higher-quality stone for a fraction of the price. If you want a diamond as a long-term asset, heirloom, or engagement ring with resale potential, buy natural. Do not buy lab-grown thinking it is an "investment" — its value will only decline over time as production costs fall further.
5. Diamond Certification
A diamond certificate (also called a grading report or dossier) is an independent assessment of the diamond's 4 C's by a gemological laboratory. It is the diamond's "identity card." Never buy an uncertified diamond. Without a certificate, you are relying entirely on the seller's claim about quality, and overgrading is extremely common.
| Lab | Full Name | Reputation | Best For | Notes |
|---|---|---|---|---|
| GIA | Gemological Institute of America | Gold standard worldwide | Natural diamonds | Strictest, most consistent grading. Globally recognized. Every serious diamond buyer should insist on GIA. |
| IGI | International Gemological Institute | Very good, industry standard for lab-grown | Lab-grown diamonds | Slightly more lenient than GIA (1-2 grades on colour/clarity). Dominant for lab-grown certification. Acceptable for natural diamonds too. |
| HRD | Hoge Raad voor Diamant | Strong in Europe | Belgian/European market | Based in Antwerp. Strict grading, comparable to GIA. Less common in India but very reliable. |
| SGL | Solitaire Gemmological Labs | India-focused | Indian retail market | Common in Indian jewellery retail. Considered more lenient than GIA/IGI. Acceptable for sub-1-carat diamonds. For larger stones, prefer GIA. |
What to Check on a Certificate
Report Number
Unique ID. Verify it on the lab's website (e.g., report.gia.edu) to confirm authenticity. The number is also laser-inscribed on the diamond's girdle.
4 C's Grades
Cut, Clarity, Colour, and Carat weight should all be explicitly stated. For round diamonds, the cut grade should be Excellent or Very Good.
Measurements
Minimum-maximum diameter and depth in mm. This confirms the diamond's physical dimensions and helps verify proportions.
Proportions Diagram
Table %, crown angle, pavilion angle, depth %, girdle thickness. For ideal round: table 54-57%, depth 60-62.5%, crown angle 34-35 degrees.
Clarity Plot
A diagram showing the location of inclusions. Helps you assess if inclusions are in a visible area (center) or hidden (edge, under prong).
Fluorescence
Graded None, Faint, Medium, Strong, Very Strong. See the fluorescence section below for implications.
Comments
Additional observations. Look for "clarity grade is based on clouds that are not shown" (usually fine) or "additional clouds/pinpoints not shown" (check carefully).
Laser Inscription
The report number is inscribed on the diamond's girdle with a laser. Viewable under 10x magnification. Ensures the certificate matches the stone.
6. Diamond Fluorescence
About 25-35% of diamonds exhibit fluorescence — a glow (usually blue) when exposed to ultraviolet light. This is caused by trace elements (primarily nitrogen) that were present during the diamond's formation. Fluorescence is graded as None, Faint, Medium, Strong, or Very Strong.
Does fluorescence matter? In most cases, no. Faint and Medium fluorescence have zero visible effect in normal lighting conditions. Only Strong or Very Strong blue fluorescence in high-colour diamonds (D-F) can occasionally make the diamond appear slightly hazy or "oily" in direct sunlight — this affects about 2% of diamonds.
The hidden opportunity: Fluorescence can actually HELP lower-colour diamonds. In I-K colour diamonds, Medium to Strong blue fluorescence can counteract the warm tint, making the diamond appear 1-2 colour grades whiter in daylight. Fluorescent diamonds also trade at 5-15% discounts, so you get a better-looking diamond for less money.
| Fluorescence | Effect on D-F (Colourless) | Effect on G-I | Effect on J-M | Price Impact |
|---|---|---|---|---|
| None | Neutral | Neutral | Neutral | Baseline (no discount) |
| Faint | No effect | No effect | Slight improvement | -1-3% |
| Medium Blue | Usually fine | Slight whitening | Noticeable whitening | -3-7% |
| Strong Blue | Risk of haze (check) | Can appear whiter | Significant whitening | -7-15% |
| Very Strong Blue | Often hazy — avoid | May be hazy — inspect | Usually beneficial | -10-20% |
7. Diamond Pricing — How the 4 C's Interact
Diamond pricing follows the Rapaport Price List (the industry wholesale benchmark) combined with market demand. Each C multiplies the others — a one-grade improvement in colour AND clarity might double the price, not just add a fixed amount.
Here are approximate price ranges per carat for 1-carat round brilliant natural diamonds in India (2025 retail prices, GIA certified):
| Quality Tier | Colour | Clarity | Cut | Price (1ct, Rs) |
|---|---|---|---|---|
| Budget | I-J | SI1-SI2 | Very Good | Rs 80,000-1,50,000 |
| Value | G-H | VS2-SI1 | Very Good-Excellent | Rs 1,50,000-2,50,000 |
| Sweet Spot | G-H | VS1-VS2 | Excellent | Rs 2,50,000-3,50,000 |
| Premium | E-F | VVS2-VS1 | Excellent | Rs 3,50,000-5,50,000 |
| Luxury | D-E | IF-VVS1 | Ideal/Excellent | Rs 5,50,000-8,00,000+ |
| Investment | D | FL-IF | Ideal | Rs 8,00,000-15,00,000+ |
Our recommended "sweet spot" combination:
Excellent Cut • G-H Colour • VS1-VS2 Clarity • Fluorescence None to Medium
This combination gives you a diamond that looks identical to a D-IF stone to the naked eye at 40-60% of the cost. The visual difference between this and a "perfect" diamond is literally invisible without lab equipment.
8. How to Buy Diamonds in India
Buying diamonds in India requires extra vigilance because the market includes everything from world-class GIA-certified solitaires to undisclosed lab-grown diamonds sold as natural. Follow these rules:
Always insist on certification
GIA or IGI certificate is non-negotiable for any diamond above 0.30 carat. Verify the certificate number on the lab's website. Check that the laser inscription on the diamond girdle matches the certificate number.
Understand BIS hallmarking for the setting
The metal setting must be BIS hallmarked. 18K gold (75% pure) or platinum (Pt 950) are standard for diamond jewellery. The hallmark ensures you are getting the purity you pay for.
Ask for natural vs lab-grown disclosure
Since 2023, Indian law requires sellers to disclose if a diamond is lab-grown. Lab-grown diamonds should have "LG" laser-inscribed on the girdle. If the price seems too good to be true for a natural diamond, it probably is lab-grown.
Compare the 4 C's, not just carat weight
Many Indian jewellers highlight carat weight and hide cut/clarity/colour information. A 1-carat I1-clarity diamond (Rs 80,000) looks completely different from a 1-carat VVS1 diamond (Rs 5,00,000). Always compare like-for-like specifications.
Understand making charges
Diamond jewellery pricing in India: Gold weight x Gold rate + Diamond cost + Making charges (10-25% on gold value). Ask for a detailed breakdown. Making charges on plain solitaire settings should be lower than on intricate pave designs.
Check buyback/exchange policies
Reputable jewellers offer exchange policies on certified diamonds. Understand the terms — most offer 80-90% of current market value on exchange for a higher-value piece. Cash buyback is typically lower (60-70%).
Diamond Settings — Choosing the Right Metal
| Metal | Purity | Colour | Best For | Considerations |
|---|---|---|---|---|
| 18K White Gold | 75% gold + 25% alloy | Silver-white (rhodium plated) | D-H colour diamonds. Most popular for engagement rings. | Rhodium plating wears off every 1-2 years and needs replating (Rs 500-1,500). Underneath, the gold has a slight yellow tint. |
| 18K Yellow Gold | 75% gold + 25% alloy | Classic warm gold | I-K colour diamonds (masks warmth). Traditional Indian designs. | Makes D-F diamonds look slightly warmer. Perfect for vintage/heirloom aesthetics. |
| 18K Rose Gold | 75% gold + copper alloy | Pink-gold | Romantic, modern designs. I-J colour diamonds. | Trendy but may date over time. Not traditional in Indian jewellery. |
| Platinum (Pt 950) | 95% platinum | Naturally white, never fades | D-G colour diamonds. Premium engagement rings. Hypoallergenic. | 30-50% more expensive than 18K white gold. Heavier. Scratches more easily (though metal displaces rather than wears off). Lower resale liquidity in India. |
| 14K White Gold | 58.3% gold + alloy | Silver-white (rhodium plated) | Budget-friendly option. Common in Western markets. | Less common in India. Lower gold content means less resale value. More durable than 18K for daily wear. |
9. Ruby (Manik) — The King of Gems
Ruby is a variety of the mineral corundum (aluminium oxide) coloured red by trace amounts of chromium. It is the second hardest natural gemstone after diamond, scoring 9 on the Mohs scale. The finest rubies — deep, vivid red with a slight blue undertone, called "pigeon blood" — are rarer than equivalent-quality diamonds and can command even higher prices per carat.
In Indian astrology, ruby represents the Sun (Surya) and is worn on the ring finger of the right hand in gold. It is believed to enhance leadership, confidence, vitality, and career success. Ruby is the recommended stone for people with a weak Sun in their birth chart.
| Origin | Quality | Colour | Price Range/ct | Notes |
|---|---|---|---|---|
| Burma (Myanmar) | Finest | Pigeon blood red | Rs 50,000-10,00,000+ | The benchmark for ruby quality. Mogok Valley rubies are the most valuable. Natural, unheated Burmese rubies are astronomical in price. |
| Mozambique | Excellent | Vivid red, slight pink | Rs 20,000-3,00,000 | Best value for high-quality rubies. Colours rival Burmese at a fraction of the price. Major source since 2009. |
| Thailand | Good-Excellent | Darker red, brownish | Rs 10,000-1,00,000 | Thai rubies tend darker. Often heat-treated to improve colour. Good commercial quality. |
| Sri Lanka (Ceylon) | Good | Pinkish-red, lighter | Rs 5,000-50,000 | Lighter than Burmese, more pink than red. Some gemologists classify the lightest as pink sapphires. |
| India (Mysore) | Low-Medium | Dark purplish-red | Rs 2,000-15,000 | Indian rubies are generally opaque or semi-translucent. Used in traditional temple jewellery and cabochons. |
Treatment disclosure: Over 95% of rubies sold today have been heat-treated to improve colour and clarity. Heat treatment is considered acceptable and industry-standard. However, untreated rubies command 3-10x premiums over heated stones of similar appearance. Always ask for treatment disclosure and buy certified (GRS, Gubelin, or GIA coloured stone reports).
10. Emerald (Panna) — The Stone of Mercury
Emerald is a variety of the mineral beryl coloured green by trace amounts of chromium and/or vanadium. It scores 7.5-8 on the Mohs scale — significantly softer than ruby or diamond. Emeralds are known for their characteristic inclusions, poetically called "jardin" (French for garden). A completely clean emerald is either extremely rare and expensive, or likely synthetic.
In Indian astrology, emerald represents Mercury (Budh) and is worn on the little finger of the right hand in gold. It is believed to enhance intelligence, communication, business acumen, and academic performance. It is one of the most commonly recommended astrological stones in India.
| Origin | Colour | Price Range/ct | Notes |
|---|---|---|---|
| Colombia (Muzo, Chivor) | Vivid bluish-green, warm | Rs 30,000-15,00,000+ | The benchmark for emerald quality. Colombian emeralds have a unique warmth and vivid saturation. Muzo mine stones are the most prized. |
| Zambia (Kagem Mine) | Deep bluish-green, cool | Rs 10,000-5,00,000 | Slightly bluish compared to Colombian. Excellent transparency. Best value for high-quality emeralds. Gaining market share rapidly. |
| Brazil | Yellowish-green to bluish | Rs 5,000-2,00,000 | Wide range of quality. Some mines produce Colombian-quality stones. Generally more included. |
| India (Rajasthan) | Light green, included | Rs 1,000-10,000 | Indian emeralds (from mines near Udaipur) are generally lighter, more included, and used primarily for astrological purposes. |
Fragility warning: Emeralds are brittle and prone to chipping. Almost all emeralds are oiled (injected with cedar oil or resin to fill surface-reaching fractures and improve clarity). This is considered standard treatment. However, emeralds require special care — avoid ultrasonic cleaners, sudden temperature changes, and impact. Use bezel settings (not prong) for rings to protect the stone. Emerald rings should not be worn during physical work.
11. Sapphire (Neelam) — The Stone of Saturn
Like ruby, sapphire is corundum — 9 on the Mohs scale. While "sapphire" commonly means blue, corundum comes in every colour except red (which is called ruby). Non-blue sapphires are called "fancy sapphires" and include pink, yellow, orange ("padparadscha"), green, purple, and white/colourless varieties.
Blue sapphire (Neelam) represents Saturn (Shani) in Indian astrology and is worn on the middle finger of the right hand in a silver or platinum/white gold setting. It is considered the most powerful and fast-acting astrological stone — effects (positive or negative) are said to manifest within hours or days. Indian astrologers strongly recommend a "trial period" of keeping the stone under your pillow for 3-7 nights before wearing it.
Yellow sapphire (Pukhraj) represents Jupiter (Brihaspati) and is worn on the index finger in gold. It is one of the most commonly recommended stones for marriage, wealth, and academic success.
| Type | Origin | Colour | Price Range/ct | Notes |
|---|---|---|---|---|
| Kashmir Blue | Kashmir, India | Velvety cornflower blue | Rs 5,00,000-50,00,000+ | The rarest and most valuable sapphires on Earth. Mines have been essentially depleted since the early 1900s. A Kashmir sapphire is the blue equivalent of a pigeon blood ruby. |
| Ceylon Blue | Sri Lanka | Medium to vivid blue | Rs 15,000-5,00,000 | Most popular origin for gem-quality blue sapphires. Lighter, more brilliant than other sources. Excellent for jewellery. |
| Burmese Blue | Myanmar | Deep royal blue | Rs 20,000-3,00,000 | Rich, saturated blue. Smaller production than Sri Lanka. Highly valued. |
| Madagascar Blue | Madagascar | Vivid blue (various) | Rs 10,000-2,00,000 | Major commercial source since late 1990s. Quality ranges widely. Best stones rival Ceylon. |
| Yellow (Pukhraj) | Sri Lanka, Thailand | Light to vivid yellow | Rs 5,000-1,50,000 | Most popular astrological stone in India. Ceylon (Sri Lanka) origin preferred for jyotish purposes. Unheated stones command premium. |
| Padparadscha | Sri Lanka | Pink-orange (lotus) | Rs 1,00,000-20,00,000+ | The rarest fancy sapphire. Named after the Sinhalese word for lotus blossom. Extraordinary pink-orange colour. |
Heat treatment: Like rubies, most sapphires (estimated 95%) are heat-treated to improve colour and clarity. Unheated sapphires with excellent natural colour command 2-5x premiums. Always ask for a coloured stone report from a reputable lab (GRS, Gubelin, SSEF, or GIA) that discloses treatment and origin.
12. Pearl (Moti) — The Organic Gem
Unlike other gemstones, pearls are organic — formed inside living molluscs (oysters and mussels) when an irritant gets trapped inside the shell, and the animal coats it with nacre (mother-of-pearl) layer by layer. They score only 2.5-4.5 on the Mohs scale, making them soft and susceptible to scratching, chemicals, heat, and dehydration.
In Indian astrology, pearl represents the Moon (Chandra) and is worn on the little finger of the right hand in silver. It is believed to enhance emotional stability, creativity, maternal relationships, and mental peace. Natural pearls are preferred for astrological purposes, but quality cultured pearls are also accepted.
| Type | Size Range | Colour | Price Range | Best For |
|---|---|---|---|---|
| Natural Pearl | 2-10mm | White, cream, grey | Rs 10,000-10,00,000+/piece | Collection, investment, astrological use. Extremely rare. Most sold as "natural" are actually cultured. |
| South Sea (Saltwater) | 9-20mm | White, golden, silver | Rs 5,000-5,00,000/piece | Premium jewellery. Largest cultured pearls. Golden South Sea from Philippines/Indonesia are the most expensive. |
| Akoya (Japanese) | 2-10mm | White with rose overtone | Rs 2,000-50,000/piece | Classic pearl necklaces, studs. Best lustre of any cultured pearl. The "classic" pearl look. |
| Tahitian (Black) | 8-16mm | Dark grey, peacock, green | Rs 3,000-1,00,000/piece | Statement pieces, modern designs. Despite the name, they are grey-green, not truly black. |
| Freshwater (Chinese) | 2-15mm | White, pink, lavender | Rs 200-10,000/piece | Budget jewellery, everyday wear, multi-strand necklaces. Excellent value. Quality has improved dramatically. |
Grading pearls: Pearls are graded on lustre (the most important factor — the intensity and sharpness of surface reflections), surface quality (smoothness), shape (round is rarest and most valuable), nacre thickness, size, and colour. There is no universal grading scale like diamonds — each pearl type has its own system.
Care warning: Pearls are the most delicate gemstone. They dissolve in acid (including vinegar and perfume), dry out in low humidity, scratch easily, and yellow over decades. Always put pearls on last (after makeup and perfume), store them in soft cloth (not airtight plastic), clean with damp cloth only, and have pearl strands restrung annually.
13. The Four Precious Stones
Traditionally, only four stones are classified as "precious" — diamond, ruby, emerald, and sapphire. All other stones are "semi-precious." This distinction is based on rarity, hardness, and historical prestige rather than any scientific classification.
Diamond
#E8E8E8
Colourless to faint yellow. Hardness 10. Rs 2L-8L/ct
Ruby
#DC143C
Pigeon blood red. Hardness 9. Rs 5K-10L/ct
Emerald
#2E8B57
Vivid bluish-green. Hardness 7.5-8. Rs 3K-15L/ct
Sapphire
#1E3A8A
Cornflower blue to royal. Hardness 9. Rs 5K-50L/ct
14. Kundan Stones — Traditional Indian Craft
Kundan is not a gemstone — it is a jewellery-making technique originating from Rajasthan, dating back to the Mughal era (16th-17th century). In kundan jewellery, stones (usually glass or semi-precious) are set in gold using lac (a resinous base) with thin strips of pure gold foil pressed around each stone to hold it in place. The gold foil strips are called "kundan."
The process is entirely handcrafted by skilled artisans (kundansaz). First, a gold framework is created. Then lac is filled inside to create a base. Stones are placed on the lac, and gold foil is carefully pushed around each stone using a pointed tool. No machine cutting, no prongs, no soldering — this is a 500-year-old technique requiring years of apprenticeship.
Critical buyer information: The glass/stone components in kundan jewellery have zero resale value. When you sell or exchange kundan jewellery, you are only paid for the gold weight minus the weight of stones and lac. A 50g kundan necklace might have only 30-35g of actual gold. Always ask for net gold weight on your invoice. The making charges on kundan jewellery (15-25%) are also higher due to the intensive hand labour.
Types of kundan stones: Glass (most common, no value), semi-precious (garnet, tourmaline — some value), synthetic stones (CZ, coloured CZ), and polki (real uncut diamonds — premium). The term "kundan jewellery" can refer to anything from a Rs 15,000 glass-and-gold set to a Rs 50,00,000 polki bridal ensemble — always clarify what stones are being used.
15. Polki — Real Uncut Diamonds
Polki refers to natural, uncut, unpolished diamonds used in their raw form. Unlike modern brilliant-cut diamonds that are precisely machine-cut into 57-58 facets, polki diamonds retain their original natural shape — typically flat or slightly domed with an irregular, organic appearance. Each polki stone is unique.
Polki diamonds do not exhibit the intense brilliance and fire of cut diamonds because they lack precision faceting. Instead, they have a softer, warmer lustre — a gentle glow rather than a sharp sparkle. This understated beauty is what makes polki jewellery distinctly different from modern diamond jewellery and gives it its antique, Mughal character.
Polki is set using the kundan technique (gold foil + lac) and is the most premium form of traditional Indian jewellery. Authentic polki bridal sets from Jaipur or Delhi can range from Rs 5 lakh to Rs 1 crore+ depending on the quantity and quality of diamonds used, the weight of gold, and the craftsmanship.
How to identify real polki vs fake:
- Foil backing: Real polki uses silver/gold foil behind the stone to enhance reflection. Glass imitations use aluminium or tin foil. Check the foil colour and quality.
- Irregular shape: Real polki stones are always irregular — no two are identical. Perfectly uniform "polki" is likely glass.
- Weight: Diamond is denser than glass. Polki pieces feel heavier for their size.
- Breathe test: Breathe on the stone — diamond clears fog within 1-2 seconds due to high thermal conductivity. Glass stays fogged for 4-5+ seconds.
- Price: If a "polki" set costs under Rs 1-2 lakh, it is almost certainly not real polki diamonds. Real polki is expensive.
16. CZ (Cubic Zirconia) — The Budget Alternative
Cubic zirconia (CZ), often marketed as "American Diamond" or "AD" in India, is a synthetic crystalline material (zirconium dioxide) that visually resembles diamond. It was first commercially produced in 1976 and has been the dominant diamond imitation ever since.
| Property | Diamond | CZ |
|---|---|---|
| Composition | Pure carbon crystal | Zirconium dioxide (ZrO2) |
| Hardness (Mohs) | 10 (hardest natural substance) | 8-8.5 (scratches over time) |
| Refractive Index | 2.417 | 2.15-2.18 |
| Dispersion (Fire) | 0.044 (balanced) | 0.058-0.066 (too much rainbow) |
| Density | 3.52 g/cm3 | 5.6-6.0 g/cm3 (75% heavier) |
| Thermal Conductivity | Very high (feels cold) | Low (warms quickly) |
| UV Fluorescence | Sometimes (25-35%) | Usually yellowish-green |
| Price (1ct equivalent) | Rs 2,00,000-5,00,000 | Rs 10-100 |
| Resale Value | 30-50% (certified) | Zero |
| Durability | Lifetime — never dulls | Clouds, scratches in 1-3 years |
| Best Use | Investment, engagement, heirlooms | Fashion jewellery, daily wear, travel |
How to spot CZ: CZ is 75% heavier than diamond (a CZ stone will weigh noticeably more than a diamond of the same size). It also has more colourful "fire" than diamond — if a stone flashes excessive rainbow colours, it is likely CZ. Under a loupe, CZ is perfectly clean (no inclusions), while natural diamonds almost always have some. The simplest test: breathe on it — diamond clears fog instantly, CZ stays fogged.
17. Moissanite — The Smart Alternative
Moissanite is silicon carbide (SiC), first discovered in a meteor crater by Nobel Prize-winning chemist Henri Moissan in 1893. Natural moissanite is extraordinarily rare — virtually all moissanite sold today is lab-created. It is the closest diamond alternative in terms of hardness, brilliance, and durability.
| Property | Diamond | Moissanite |
|---|---|---|
| Hardness (Mohs) | 10 | 9.25 (second hardest gemstone) |
| Brilliance (RI) | 2.417 | 2.65-2.69 (more brilliant) |
| Fire (Dispersion) | 0.044 | 0.104 (2.4x more fire) |
| Durability | Lifetime | Lifetime — will not cloud or scratch |
| Price (1ct equivalent) | Rs 2,00,000-5,00,000 | Rs 5,000-15,000 |
| Resale Value | 30-50% | Minimal (but you paid 95% less) |
| Appearance | Balanced brilliance + fire | More rainbow flashes, slightly different sparkle pattern |
| Detection | N/A | Standard diamond testers read it as diamond. Needs moissanite-specific tester. |
Why moissanite is gaining popularity: It scores 9.25 on Mohs (will not scratch or cloud like CZ), has MORE brilliance and fire than diamond, costs 85-95% less, and is ethically produced in labs. The main difference visible to the eye is that moissanite's fire is more colourful — in larger stones (1.5ct+), it produces more rainbow flashes than a diamond would, which some find slightly "disco ball"-like. In smaller stones (under 1ct), most people cannot distinguish moissanite from diamond.
Interesting fact: Standard thermal diamond testers (the pen-type devices used by many Indian jewellers) will read moissanite as "diamond" because moissanite has high thermal conductivity, similar to diamond. Only a moissanite-specific tester or an electrical conductivity test can distinguish them. This is why some unscrupulous sellers have passed moissanite off as diamond.
18. Meenakari — Enamel Art on Gold
Meenakari is not a stone but a decorative enamelling technique where coloured glass powder is fused onto the gold surface at high temperatures (750-850°C) to create vibrant, permanent designs. The word "meena" derives from the Persian word for enamel.
Meenakari originated in Persia and was brought to India by Mughal artisans. It flourished in Rajasthan, particularly in Jaipur, which remains the centre of meenakari craftsmanship today. The technique involves engraving designs into gold, filling the grooves with powdered enamel (coloured glass), and firing in a kiln. Multiple colours require multiple firings, from the highest-melting colour (red, using gold chloride) to the lowest (green).
Traditional colours: Red (lal), green (sabz), white (safed), blue (neela), and yellow (peela). High-quality meenakari uses vivid, translucent enamel that allows the gold underneath to shine through. Cheap meenakari uses opaque, dull enamel that chips easily.
Resale note: Meenakari adds making/craft value but no material value at resale. The enamel is actually removed (cleaned off) during the melting process when old gold is exchanged. You are only paid for the gold weight. However, fine meenakari jewellery from skilled artisans is a wearable art form and is an important part of Rajasthani bridal tradition.
19. Stone Weight vs Gold Weight — The #1 Thing Buyers Don't Know
This is the single most important thing most jewellery buyers in India do not understand. When a piece of jewellery is weighed on the scale, the total weight includes both the gold AND the stones/lac/enamel. When you sell or exchange, you only get paid for the net gold weight.
Example: Kundan necklace on scale = 50.0g total
Stones + lac + meenakari weight = 15.0g
Net gold weight = 35.0g (this is what you get paid for)
At Rs 7,000/g (22K), you paid for 50g = Rs 3,50,000
At resale, you get paid for 35g = Rs 2,45,000
Instant loss = Rs 1,05,000 (30%) just from stone weight
Always ask: "What is the net gold weight after deducting stones, lac, and other materials?" This must be printed on your invoice. Reputable jewellers always disclose this. If a jeweller is vague about net gold weight, walk away.
Typical Stone-to-Gold Ratios
| Jewellery Type | Stone/Non-Gold % | Net Gold % | Resale Impact |
|---|---|---|---|
| Plain gold (no stones) | 0% | 100% | Best resale — full weight is gold |
| Light CZ/AD jewellery | 3-8% | 92-97% | Minimal impact |
| Diamond solitaire ring | 5-15% | 85-95% | Diamond has independent value if certified |
| Pearl-set jewellery | 10-25% | 75-90% | Pearls have low resale value |
| Kundan set (glass stones) | 20-35% | 65-80% | Significant — glass stones worth nothing |
| Heavy kundan bridal set | 25-40% | 60-75% | Major impact — can lose 25-40% of total weight |
| Polki bridal set | 15-30% | 70-85% | Polki diamonds have some resale value |
20. How to Spot Fake Stones — Simple Tests
While definitive testing requires laboratory equipment, these simple tests can help you identify obvious fakes. None of these tests alone is conclusive — they are screening tools, not replacements for professional certification.
Diamond
- 1.Fog test: Breathe on the stone. Diamond clears fog in 1-2 seconds due to extreme thermal conductivity. Glass/CZ stays fogged for 4-5+ seconds.
- 2.Newspaper test: Place the stone flat on newspaper text. A well-cut diamond refracts light so strongly that you cannot read the text through it. CZ and glass allow you to see the text.
- 3.Sparkle test: Under normal lighting, diamonds produce white brilliance with occasional rainbow flashes. CZ produces excessive rainbow fire. Moissanite produces even more rainbow than diamond.
- 4.Weight test: CZ is 75% heavier than diamond. If you have a known-size reference, a CZ will feel significantly heavier.
- 5.UV test: About 30% of diamonds glow blue under UV light. CZ usually glows yellowish-green. This is not conclusive but can be a clue.
- 6.Thermal test: Hold the stone against your cheek. Diamond feels cold and absorbs heat quickly. Glass/CZ feels warmer. Professional thermal testers are more reliable.
Ruby & Sapphire
- 1.Hardness: Real corundum (9 Mohs) cannot be scratched by a steel file or glass. If it scratches easily, it is glass or synthetic.
- 2.Inclusions: Natural rubies/sapphires almost always have inclusions (silk, needles, fingerprints). A perfectly clean stone is likely synthetic or glass.
- 3.UV fluorescence: Many natural rubies glow strong red under UV light. Thai/African rubies may glow less. Synthetic rubies usually glow very strongly.
- 4.Price reality: A clean, vivid 2+ carat ruby for under Rs 10,000 is almost certainly synthetic or glass. Real gem-quality rubies of that size cost lakhs.
Emerald
- 1.Inclusions (jardin): Natural emeralds almost ALWAYS have visible inclusions. A perfectly clean emerald is either synthetic, glass, or worth crores.
- 2.Colour zoning: Natural emeralds often show uneven colour distribution when viewed from different angles. Synthetics tend to have very uniform colour.
- 3.Chelsea filter: Under a Chelsea colour filter, many natural emeralds appear reddish due to chromium content. Glass imitations appear green. (Requires a special filter.)
- 4.Specific gravity: Emerald has SG of 2.67-2.78. Glass imitations are usually heavier (SG 2.5-4.2).
Pearl
- 1.Tooth test: Rub the pearl gently against the edge of your front tooth. Real pearls (natural and cultured) feel slightly gritty/sandy due to nacre layers. Fake pearls (plastic, glass) feel perfectly smooth.
- 2.Surface examination: Under magnification, real pearls show a scaly, layered surface (like fingerprints). Fake pearls are perfectly smooth or show a painted/coated surface.
- 3.Weight: Real pearls are heavier than plastic imitations but lighter than glass beads.
- 4.Drill holes: In strands, examine the drill holes. Real pearls show nacre layers in the drill hole. Fake pearls show a coating peeling away from a core.
21. Stone Settings Explained
How a stone is held in the metal frame (the "setting") affects its appearance, security, maintenance, and suitability for daily wear. Here are all major setting types:
| Setting | How It Works | Pros | Cons | Best For |
|---|---|---|---|---|
| Prong (Claw) | 3-6 metal claws grip the stone at the girdle, holding it above the band | Maximum light entry = maximum brilliance. Stone appears larger. Easy to clean and inspect. | Prongs can catch on clothing/hair. Stone more exposed to impact. Prongs need checking every 6-12 months. | Solitaire engagement rings, pendants, earrings |
| Bezel | A thin metal rim completely surrounds the stone's girdle, holding it securely | Most secure setting — stone is protected from all sides. Sleek, modern look. Great for active lifestyles. | Less light entry than prong (slightly less brilliance). Stone appears slightly smaller. Harder to clean underneath. | Daily-wear rings, emeralds (protects fragile stones), active people |
| Channel | Stones sit in a groove (channel) between two metal walls, no prongs | Smooth surface — nothing catches. Stones are well-protected. Clean, geometric look. | Difficult and expensive to repair if a stone falls out. Individual stones hard to replace. | Wedding bands, eternity rings, accent stones |
| Pave | Tiny stones set closely together with minimal metal visible, held by small beads/prongs | Creates a continuous sparkle surface. Makes the piece look entirely encrusted with diamonds. | Small stones can fall out. Hard to repair. Not suitable for rough wear. Cleaning requires care. | Halos, band accents, statement pieces |
| Tension | The stone is held by the pressure of the metal band squeezing it from both sides | Stone appears to float with no visible support. Very modern, dramatic look. | Requires very precise engineering. Stone more vulnerable to impact. Cannot be easily resized. | Modern design rings, statement pieces |
| Invisible | Stones have grooves cut into their sides and slide into a metal grid, with no visible metal between stones | Creates a seamless surface of stones with no visible metal. Very impressive appearance. | Most expensive and difficult setting. Repairs are complex. Only works with certain stone shapes (princess, baguette). | Luxury pieces, designer jewellery |
| Kundan | Stone set in lac base with gold foil pressed around it (traditional Indian technique) | Traditional, heritage aesthetic. Allows setting of irregular/uncut stones. Handcrafted artisanal value. | Lac can soften in heat. Not as secure as metal settings. Stones can loosen over time. | Traditional Indian bridal jewellery, polki sets |
22. Navratna — The Nine Astrological Stones
The Navratna ("nine gems") is a sacred arrangement of nine gemstones representing the nine celestial bodies (Navagraha) in Vedic astrology. Worn together in a specific geometric pattern, they are believed to balance all planetary influences and provide comprehensive astrological protection. The tradition dates back thousands of years and is mentioned in ancient texts like the Garuda Purana and Brihat Samhita.
| Planet | Hindi Name | Stone | Hindi Name | Colour | Finger | Metal | Price/ct (Rs) |
|---|---|---|---|---|---|---|---|
| Sun | Surya | Ruby | Manik | Red | Ring finger | Gold | 5K-10L |
| Moon | Chandra | Pearl | Moti | White | Little finger | Silver | 500-1L/pc |
| Mars | Mangal | Red Coral | Moonga | Red-orange | Ring finger | Gold/Copper | 500-5K |
| Mercury | Budh | Emerald | Panna | Green | Little finger | Gold | 3K-15L |
| Jupiter | Brihaspati | Yellow Sapphire | Pukhraj | Yellow | Index finger | Gold | 5K-1.5L |
| Venus | Shukra | Diamond | Heera | White | Middle finger | Platinum/White Gold | 2L-8L |
| Saturn | Shani | Blue Sapphire | Neelam | Blue | Middle finger | Silver/Platinum | 5K-50L |
| Rahu | Rahu | Hessonite Garnet | Gomed | Honey brown | Middle finger | Silver | 500-10K |
| Ketu | Ketu | Cat's Eye | Lehsunia | Yellowish-green | Little finger | Silver | 500-15K |
Navratna arrangement: In a Navratna ring or pendant, Ruby (Sun) is placed in the centre. The remaining eight stones are arranged in a specific pattern around it. The traditional arrangement places natural enemies (like Sun and Saturn) on opposite sides. A proper Navratna should use natural, untreated stones for maximum astrological effect.
Important: In Indian astrology, wearing the wrong stone can have negative effects. Always consult a qualified astrologer who has analysed your complete birth chart (kundli) before wearing any astrological stone — especially Blue Sapphire (Neelam), which is considered the most powerful and potentially harmful if not suited to the wearer.
23. Price Per Carat — Across All Stones
A comparative view of approximate mid-range prices per carat (or per piece for pearls) across the stones covered in this guide. Prices represent good commercial quality, not top-tier collector specimens.
Quick Decision Guide
Engagement ring on a budget?
Lab-grown diamond (Rs 30K-60K for 1ct) or moissanite (Rs 8K-15K for 1ct equivalent) in 18K white gold. Both look identical to natural diamond to the untrained eye.
Engagement ring as an investment?
Natural GIA-certified diamond, Excellent cut, G-H colour, VS1-VS2 clarity. This is the sweet spot of beauty and value retention.
Traditional bridal set?
Kundan with glass stones if on a budget (focus gold weight). Polki for premium. Always ask for net gold weight on invoice.
Astrological stone?
Buy certified, natural, untreated stones from reputed dealers. Consult an astrologer for specific stone/weight/metal/finger recommendations. Start with a trial period.
Daily-wear jewellery?
CZ or moissanite for stone pieces (they will get worn). Plain gold for maximum resale. Bezel settings for durability.
Gift for someone special?
Natural diamond earrings or pendant (0.25-0.50ct each) in 18K gold. Certified, easy to insure, timeless, holds value.