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instruments and mechanical parts without damage to delicate parts
Perfect for the micro electronic devices and other industries(fine detail work on jade
Square Tube Ø4mm (0
4" x ½" Gialla
Hoop Forming Stake
0.73ct Round Faceted Sapphire 5.5mm Bergeon Swiss 2819.08 Jaxa Watch Case Opener instruments and mechanical parts withoutSapphire 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:
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