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Stone Size (mm): 20x16mm
Power: 2x AA (not included)
Material diameter: 1
Replacement Rubber Heads
Round Faceted Pink Sapphire 3.25mm precious metal tester Stone Size (mm): 20x16mmSapphire 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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