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Temperature Accuracy：±0
Silicone gasket
The unit consists of 18 gauges in the sizes for measuring the cut for the stone to sit in
Audible continuity and Diode test
Disc cutter set of 5
2.21ct Cushion Cut Pink Sapphire Certified Unheated 8.66x6.4mm Arbe USA Vulcanizer for Rubber Moulds Temperature Accuracy：±0Sapphire 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:
