Chrysocolla
From The Gemology Project
| Chrysocolla | |
|---|---|
| Chemical composition | CuSiO32H2O |
| Crystal system | Monoclinic |
| Habit | Cryptocrystalline |
| Cleavage | None |
| Fracture | Even |
| Hardness | 2-4 |
| Optic nature | None |
| Refractive index | ±1.50 |
| Birefringence | None |
| Dispersion | None |
| Specific gravity | 2.0-2.4 |
| Lustre | Vitreous |
| Pleochroism | Weak |
Chrysocolla cabochon
Photo courtesy of Distinction Jewelry
