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aquamarines are cut into faceted gems
Swisotech S8142
Carl Zeiss vision
2 support screws in tempered steel
With large LCD display and white backlight
2.21ct Cushion Cut Pink Sapphire Certified Unheated 8.66x6.4mm Gemoro Sure Gauge XL Digital Pocket Gemstone Gauge aquamarines are cut into facetedSapphire 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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