20.1gr Recrystallized Ruby Color Sapphire Lab Created Faceting Rough

Sapphire Lab Created
R522

Color: Ruby
Type: Rough
Weight: 20.1 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