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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
Beat error measurement: 0 to 4ms (+ / - 0
5cm (depth x width)
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Weight: 900 grams
With auto range control function
3.74ct Oval Faceted Sapphire 10x7.7mm Gemoro Pro-D 3 Diamond Tester Beat error measurement: 0 toSapphire 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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