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.
Bombay Sapphire all over the world can participate by designing their own “inspired” martini cocktail glass. The finalists (one from each participating country) are then invited to the yearly Salone del Mobile, an international design fair in Milano, where the winner is chosen. Bombay Sapphire also endorses glass artists and designers with the Bombay Sapphire Prize, which is awarded every year to an outstanding design which features glass. Bombay Sapphire also showcases the designers' work in the Bombay Sapphire endorsed blue room, which is a design exhibition touring the world each year. From 2008 the Bombay Sapphire Designer Glass Competition final will