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Tsavorite Garnet
Chemical composition Ca3Al2(SiO4)3

Calcium aluminum silicate

Crystal system Cubic
Habit Dodecahedra
Cleavage None
Hardness 7.0-7.5
Optic nature Isotropic
Refractive index 1.738-1.745
Birefringence None
Specific gravity 3.60-3.68
Lustre Vitreous