Blue Sapphire, or Neelam Ratna, is a blue-colored precious gemstone of the Corundum mineral group. The cost of a blue sapphire gemstone in India or anywhere in the world mainly depends on two factors. One is technical factors, such as cut, color, clarity, carat weight, and place of origin while the other one is universal demand and supply chain. The per-carat Blue Sapphire Stone Price starts from Rs. 2,000 and goes as high as Rs. 5,00,000 depending upon the quality factors. You can explore the widest collection of certified blue sapphire gemstones at Navratan, the online gem Bazar.