4.29ct Oval Faceted Sapphire Certified Unheated 11.6x6mm Magnetic Tumbler 100g Bench Tray

Bench Tray

vertical drilling function

Bergeon 30637

9 RPM) / 1RPM(above 1000RPM)

Ladies 37 x 30mm (Depth 9mm)

4.29ct Oval Faceted Sapphire Certified Unheated 11.6x6mm Magnetic Tumbler 100g Bench TraySapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in colours is due to trace amounts of elements such as iron, titanium, chromium, copper and magnesium. Mohs Scale of Hardness: 9 (out of 10). Sources: Mines that have yielded the finest sapphires in colour and clarity are located in Kashmir, Myanmar and Sri Lanka. Nowadays the main sources of sapphires are: