16.8.6: Uvarovite
( \newcommand{\kernel}{\mathrm{null}\,}\)
Uvarovite Garnet | |
---|---|
Chemical composition | Ca3Cr2(SiO4)3alcium chromium silicate |
Crystal system | Cubic |
Habit | Dodecahedra |
Cleavage | None |
Hardness | 7.5 |
Optic nature | Isotropic |
Refractive index | 1.86-1.87 |
Birefringence | None |
Specific gravity | 3.77 |
Lustre | Vitreous |
Figure \PageIndex{1}: Uvarovite
Photo courtesy of Rick Martin
Uvarovite is hardly ever found in crystals large enough to be cut into gemstones.