Lab Created Blue Sapphire Corundum Round Faceted Loose Stones (3mm – 20mm)

Description

Round Lab Created (Corundum) Blue Sapphire
These sapphires have the same chemical compound as natural, mined from the earth sapphires!
They will fit in most of our same sized calibrated settings.
Chemical composition : Al2O3
Crystal Structure : Hexagonal
Purity : 99.99%
Refractive Index : 1.717
Density : 3.98-4.1 g/cm3
Hardness Mohs : 9
Manufacturing Method : Verneuil, (Also called Flame Fusion)