5.96ct Octagon Cut Bi-Colour Green Sapphire Certified Unheated 13.1x8mm Jewellery box Temperature sensor: NTC 25 Celsius

Temperature sensor: NTC 25 Celsius degree=10K B3435

Weight: 700g

Flexi hand piece

1 * Screwdriver Tools Set

5.96ct Octagon Cut Bi-Colour Green Sapphire Certified Unheated 13.1x8mm Jewellery box Temperature sensor: NTC 25 CelsiusSapphire 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: