Sapphire Lab Created
R531
Color: From pink (in sunlight) to blue/purple (under white lamp)
Type: Rough
Weight: 59.2 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
Growth Method: Flame Fusion
