Corundum, Polychrome (Bi-Color Ruby / Sapphire) Crystals, 10g, Bi-Color AAA Quality. $3/g. High grade sapphire specimen. For more information, contact a Madagascar Minerals® sales representative (520) 882-8884. Further discounts apply for volume purchasing. Treatment Disclosure: Product in photos has been lightly coated with mineral oil. Once semi-dry, the oil gives a "wet" look, which increases the color saturation. This is an industry standard.

 

Corundum Scientific Properties: Category: Oxide mineral – Hematite group Chemical formula: Aluminium oxide, Al2O3 Strunz classification IV/C.04-10 Dana classification 4.3.1.1 Crystal symmetry Trigonal (32/m) Unit cell a = 4.75 Ã…, c = 12.982 Ã…; Z=6

Metaphysical guide: Corundum promotes insight to the unknown, enhances one's intuitive awareness. Corundum stimulates ambition and confidence, subdues emotions and helps one to release anger in a positive manner. More Info >>