Lab Created Blue Sapphire Corundum Octagon Faceted Loose Stones(4x2mm - 20x15mm)

Description

Gorgeous Octagon 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)