Sapphire is a jewel of blue color of various shades. The blue color of sapphire is caused the presence of of titanium and iron impurities. Sapphire is characterized by high hardness and strong gloss. Temperature of melting of sapphire is 2040 °C. The most known deposits of sapphire are situated in the territory of the USA, Australia, Madagascar, India, Sri Lanka, Vietnam, Burma, Thailand and China. Sapphires are used in jewelry.