Uvarovite
green · Garnet family
| Also known as | Garnet (Garnet family) |
|---|---|
| Colour | Green |
| Mohs hardness | 6.5–7.5 |
| Lustre | Vitreous |
| Streak | White |
| Crystal system | Cubic |
| Transparency | Transparent, translucent |
| Cleavage | Indistinct |
| Fracture | Uneven, conchoidal |
| Chemical formula | Ca 3 Cr 2 Si 3 O 12 |
| Specific gravity | 3.77–3.81 |
What is Uvarovite?
Uvarovite is a chromium-bearing garnet group species with the formula: Ca3Cr2(SiO4)3. It was discovered in 1832 by Germain Henri Hess who named it after Count Sergei Uvarov (1765–1855), a Russian statesman and amateur mineral collector. It is classified in the ugrandite group alongside the other calcium-bearing garnets andradite and grossular.
How to identify Uvarovite
- Lustre: Vitreous.
- Hardness: Mohs 6.5–7.5 — hard enough to scratch glass.
- Streak: White.
- Habit: Cubic crystal system.
Uvarovite in different forms
Stones often confused with Uvarovite
Frequently asked questions
How hard is Uvarovite?
Uvarovite is Mohs 6.5–7.5 on the hardness scale.
What colour is Uvarovite?
Uvarovite is typically green (Green, emerald-green, green-black).