Gemstone Guide
Gemstones in Jewellery
Stones add colour, sparkle, and value to gold jewellery. From real diamonds to decorative CZ — here's what you need to know about each type.
Common Stones in Indian Jewellery
| Stone | Type | Price Range | Used In | Resale |
|---|---|---|---|---|
| Diamond (Cut) | Precious | ₹20K-5L/carat | Modern rings, pendants, earrings | Good (certified) |
| Polki (Uncut Diamond) | Precious | ₹10K-2L/carat | Bridal kundan sets, heritage pieces | Moderate |
| Ruby (Manik) | Precious | ₹5K-50K/carat | Temple jewellery, rings, pendants | Good (certified) |
| Emerald (Panna) | Precious | ₹3K-30K/carat | Kundan sets, rings, necklaces | Good (certified) |
| Pearl (Moti) | Organic | ₹500-10K/piece | Hyderabadi sets, maang tikka | Low |
| Kundan (Glass) | Decorative | Included in making | Traditional bridal sets | None (decorative) |
| CZ (American Diamond) | Synthetic | ₹10-100/stone | Daily wear, fashion pieces | None |
| Meenakari (Enamel) | Decorative | Included in making | Rajasthani jewellery, bangles | None (craft value) |
Stone Weight & Gold Weight
This is the #1 thing people don't know: When a piece is weighed on the scale, the weight includes both gold AND stones. When you sell or exchange, you only get paid for the gold weight.
Total weight on scale: 25.0g
Stone weight (kundan + pearls): 5.0g
Net gold weight: 20.0g ← this is what you get paid for
Always ask: "What is the net gold weight after deducting stones?" This should be on your bill.
Diamond Basics — The 4 C's
If buying diamond jewellery, these four factors determine the stone's value:
Carat
Weight of the diamond. 1 carat = 0.2 grams. Bigger isn't always better — a well-cut smaller stone can outshine a large dull one.
Cut
How well the diamond is shaped and faceted. Determines sparkle. Ideal/Excellent cut reflects maximum light. This is the most important factor.
Clarity
How free of inclusions (internal flaws). Ranges from FL (flawless) to I3 (visible inclusions). VS1-VS2 is the sweet spot — clean to the naked eye.
Colour
Ranges from D (colourless, most expensive) to Z (yellow tint). G-H range looks white and is significantly cheaper than D-F.
CZ vs Real Diamond
| Feature | Real Diamond | CZ / American Diamond |
|---|---|---|
| Material | Natural carbon crystal | Cubic zirconia (lab-made) |
| Hardness | 10/10 (hardest natural substance) | 8.5/10 (scratches over time) |
| Sparkle | White brilliance + rainbow fire | More colourful fire (too much sparkle) |
| Price | ₹20,000 - ₹5,00,000+ per carat | ₹10 - ₹100 per stone |
| Resale | Yes (with certificate) | No resale value |
| Durability | Lifetime — never dulls | Clouds and scratches in 1-3 years |
| Best for | Investment pieces, engagement rings | Fashion jewellery, daily wear |