Diamond imitations .....
| Imitation | Difference to Natural Diamond |
|---|---|
| Cubic Zirconia | Heavier |
| High Zircon | Stronger birefringence |
| Paste | Soft |
| Rock crystal | Lacks "fire" |
| Sapphire | Less brilliance |
| Sphene | Softer, stronger birefringence |
| Spinel | Less "fire" or dispersion |
| Strontium titanate | Soft, more "fire" than diamond |
| Synthetic scheelite | Soft |
| Synthetic rutile | Excess "fire", stronger birefringence |
| Yag | Heavier, lacks "fire" |
