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.
Blue Sapphire Stakes were nominated for the Blue Diamond Stakes earlier in the year as two-year-olds were automatically nominated for this event. In 2012 the race was held on Caulfield Guineas day but since 2014 the race was moved to the second day of the carnival, the Wednesday meeting. For two year olds: For three year olds: Event held during the MRC Spring Racing Carnival. From 2012 the race retained the Listed grading but was reregistered as the Redoute's Choice Stakes and is held in late April or early May. † Run at Sandown Racecourse Hillside track Blue Sapphire Stakes The Blue Sapphire