0.36ct Round Faceted Sapphire 4.0x2.4mm Wax Designing Ring Mandrel Kit Fine quality and practical

Fine quality and practical

1 * User Manuall

48 x 65 x 30mm Frame

For ES3000

0.36ct Round Faceted Sapphire 4.0x2.4mm Wax Designing Ring Mandrel Kit Fine quality and practicalSapphire 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: