Tashmarine
From The Gemology Project
| Tashmarine Diopside | |
|---|---|
| Chemical composition | CaMg(SiO3)2
Calcium magnesium silicate |
| Crystal system | Monoclinic |
| Habit | Prismatic, waterworn pebbles |
| Cleavage | Distinct |
| Fracture | Conchoidal |
| Hardness | 5 |
| Optic nature | Biaxial + |
| Refractive index | 1.667-1.693 |
| Birefringence | 0.025 |
| Dispersion | Low, 0.013 |
| Specific gravity | 3.29 |
| Lustre | Vitreous |
| Pleochroism | Weak to none |
Tashmarine™ is a trade name for yellowish green diopside found in, amongst other places, Tashkent, Uzbekistan.
