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(02) Cylinder Round Nose Small
The Witschi Chronocube is designed to offer fast testing results that are easy to read & display in a retail environment (or workshop)
Overall length 200mm
time and energy conveniently
0.75ct Princess Cut Sapphire 4.9mm Diamond Grading Case (02) Cylinder Round Nose SmallSapphire 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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