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Extra Fine Diamond Sharpening Lap Stone
Package size: 26 * 10 * 10cm / 10
57in (L * W * H)
Detection depth and edge detection can vary due to moisture content of materials
6.2ct Round Cabochon Star Sapphire 10.4-10x5.4mm Dumont Swiss Brass Tweezers Extra Fine Diamond Sharpening LapSapphire 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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