SPECIFIC GRAVITY: 3.95-4.03. REFRACTIVE INDEX: 1.762-1.788. HARDNESS: 9 on Moh's Scale (Hardest after Diamond).
Smaller size stones will be lighter in color. The item "Natural Yellow Sapphire Round Diamond Cut Lot (1.2mm 6mm) Loose Gemstones" is in sale since Saturday, June 27, 2015. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Sapphire\Natural Sapphires".The seller is "gemsbysun" and is located in Bangkok, Bangkok. This item can be shipped worldwide.