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incubators
Battery: 1 * CR2032 3V 320mAh Lithium Battery (Included)
1 * Hot Knife Chuck
To cover crown sizes 3 to 5mm
Wide Usage: Can be used in the field of motor
0.72ct Oval Faceted Sapphire 6.5x4.5mm Chronoscope incubatorsSapphire 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: