Grossular (Garnet)

Color: Green yellow, copper, brown

Moh’s Hardness: 7.5

Refractive Index: 1.73-1.75

Critical Angle: 35.31°

Specific Gravity: 3.60-3.68

Cleavage: Imperfect

Fracture: Subconchoidal

Heat Sensitivity: Moderate

Birefringence (double refraction): 0.027

Crystal Structure: Isometric, rhombic, dodecahedron,icositetrahedron

Tsavorite Garnet - Green - vanadium is the green colorant. It is usually only available in small sizes and care must be taken when cutting because it tends to cut dark stones. I usually cut checker boards and opposed bars in larger rough.

Treatments: Generally none