20.5gr Recrystallized Rubellite Color Sapphire Lab Created Faceting Rough

Sapphire Lab Created
R496

Color: Rubellite
Type: Rough
Weight:  20.5 gr  

Mineral: Corundum
Chemical Formula: Al2O3
Crystal System: Trigonal
Hardness (Mohs): 9
Refractive Index: 1.76–1.77
Density, g/cm3: 4
Dispersion: 0.018
Pleochroism: Strong