Template:Demantoid
From The Gemology Project
Demantoid Garnet | |
---|---|
Chemical composition | Ca3Fe2(SiO4)3
Calcium iron silicate |
Crystal system | Cubic |
Habit | Dodecahedra |
Cleavage | None |
Hardness | 6.5 |
Optic nature | Isotropic |
Refractive index | 1.85-1.89 |
Birefringence | None |
Specific gravity | 3.85 |
Lustre | Vitreous to adamantine |