We are offering blue sapphire gemstone is called as nelashma, neelratna, shaniratna, indraneel etc. In persian it is called as yakoot or kabood. It is corundum and comes in many other colours as well. But traditionally sapphire is associated with blue colour only. The chemical composition is aluminium oxide with a formula of al203 good quality is found in burma, sri lanka and india. The best indian sapphire is cornflower blue and is found in jammu and kashmir. Montana in usa also produces it, cambodia, brazil, kenya, malawi and colombia also produce this sapphire.