Under the unusual Indian name hides a rare species of pink orange gemstone, one of the precious varieties of corundum. It differs from yellow sapphires and is the most rarely found type of corundum. It is a mineral with a Mohs hardness of 9. It has a trigonal structure and is composed of aluminum oxide, its chemical formula is Al2O3. The specific gravity is 4; the refractive index is 1.76-1.77; the maximum birefringence is 0.008. The main sapphire-forming rocks are marble, basalt, or pegmatite. It is mainly extracted from alluvial deposits or rock deposits formed by weathering. It is commonly found in placer deposits in Australia, Burma, and Thailand. Under the name, Inamori padparadscha hides artificially made by the Japanese company from Kyoto Kyocera pink orange gemstone. This name is applied to the yellowish, pink, and orange gemstones and dark types of sapphire from island deposits, or to synthetic corundum of all shades of yellow. The most famous pink and orange gemstones: Ceylon Padparadschah Sapphire-golden yellow sapphire with oval cut; 100.18 carats; square-cut sapphire; 28.61 carats; large pinkish orange gemstone 1266 carats originally from Sri Lanka; was later cut into several copies, the largest of which was 47 carats; pinkish orange gemstone; 30 carats.