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Star punch number 118A
It is suitable to be used in the field of laboratory research
electronics & circuit board repairing
Can be easily scraped off for a smooth finish
0.65ct Pear Shape Yellow Sapphire 6.2x4.5mm ANDROID & WINDOWS Star punch number 118ASapphire 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: