Neelam Ratna, or blue sapphire, is a beautiful blue-colored precious gemstone that belongs to the Corundum mineral group. Being a highly valuable gem, its cost in India or other parts of the world largely depends on two aspects. One is technical characteristics, for instance, cut, color, clarity, carat weight, and source of origin while the other one is global demand and supply chain. The per-carat blue sapphire Stone price begins 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 crystals at Navratan, the online gem Bazar.