A rarest 0.40Ct Natural kashmir blue sapphire Gemstone.
A rarest 0.40ct kashmir blue sapphire which suits for the ring or collection is for sale. It weights 0.40ct with dimension 4.6 x 3.7 x 2.4mm Clarity : VVS Treatment :Heat treatment Sapphire Gem info Color: any color Hardness: 9 Refractive index: 1.76 - 1.78 Density: 3.99 - 4.00 Chemical composition: Al2O3 Crystal structure: hexagonal Origins: Kashmir(India), Sri Lanka, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA. Sapphires are a variety of corundum, ex