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.
Sapphire Aircraft Australia Sapphire LSA epoxy resin and extruded foam. Its span wing has an area of . The standard engine fitted is the Rotax 503 two-stroke powerplant. In the early 2010s period a two-seat version and a motorglider variant were being developed. Sapphire Aircraft Australia Sapphire LSA The Sapphire Aircraft Australia Sapphire LSA is an Australian ultralight aircraft that was designed and produced by Sapphire Aircraft Australia. It was introduced in the late 1980s and still in production as recently as 2010, but now out of production. The Sapphire was supplied as complete ready-to-fly-aircraft. The Sapphire complies with the Fédération Aéronautique Internationale microlight rules.