0.69ct Pear Shape Sapphire 6.1x4.8mm Centring Bit Bushing Tool Span 125mm Maximum

Span 125mm Maximum

LCD display design makes you can fast read data

Can be used with watches

electrical fan

0.69ct Pear Shape Sapphire 6.1x4.8mm Centring Bit Bushing Tool Span 125mm MaximumSapphire 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: