Alexandrite Marquise Shape Lab Created Corundum (4x2mm-24x12mm)

Description

Gorgeous Marquise Faceted Lab Created (Synthetic Corundum) Alexandrite
This gem will fit in most of our same sized calibrated settings
Chemical composition : Al2O3
Crystal Structure : Triagonal
Thermal properties: Melting point 2046°C
Purity : 99.99%
Refractive Index : 1.717
Density : 3.98-4.1 g/cm3
Hardness Mohs : 9
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