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Precise control of melting temperatures up to 2028°F (1120°C)
5 * Grinding Stone
With 10 spare blade fixing screws
Excellent cutting finished edges
--- Spanner: 2
2.1ct Oval Faceted Sapphire 9.9x7mm MOBILE GOLD & PLATINUM TESTER FOR APPLE IOS IPHONE/IPAD/IPOD TOUCH Precise control of melting temperaturesSapphire 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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