Created Sapphire
Lot CS784
Color: Black
Shape: Oval cabochon
Size: 10x8 mm
Weight: 4.12ct
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
