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Widely used in household DIY
Easy to use and provides instant display of results
Excellent 5-year warranty
Calendar / time display function
2.19ct Oval Purple Sapphire 7.9x6.4mm GemOro Testerossa Voice Alert Diamond Tester Widely used in household DIYSapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur in orange, yellow, green, brown, purple, pink, black and colourless. Red and reddish pink coloured corundum is referred to as ruby. 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
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