Sapphire jewelry. They also may be created synthetically in laboratories for industrial or decorative purposes in large crystal boules. Because of the remarkable hardness of sapphires – 9 on the Mohs scale (the third hardest mineral, after diamond at 10 and moissanite at 9.5) – sapphires are also used in some non-ornamental applications, such as infrared optical components, high-durability windows, wristwatch crystals and movement bearings, and very thin electronic wafers, which are used as the insulating substrates of very special-purpose solid-state electronics (especially integrated circuits and GaN-based LEDs). Sapphire is the birthstone for September and the gem of the 45th anniversary.
Istanbul Sapphire Istanbul Sapphire Istanbul Sapphire, or Sapphire, is a skyscraper, and as of 2016, the tallest building in Istanbul and Turkey, located in the central business district of Levent. Istanbul Sapphire was the 4th tallest building in Europe when its construction was completed in 2010. It is the country's first ecological skyscraper. Sapphire rises 54 floors above ground level, and has an above-ground roof height of 238 meters: the building has an overall structural height of 261 meters including its spire, which is part of the design and not a radio antenna. Designed by Tabanlıoğlu Architects, it is a shopping and