2.19ct Octagon Faceted Sapphire 8.6x5.2mm Anti-Static Coat mm and you can measure

mm and you can measure up to 20mm by this gauge

Set of 15 sizes: Ø5

5 * 7 * 3cm / 7

55 x 45 x 18mm

Height 380mm

2.19ct Octagon Faceted Sapphire 8.6x5.2mm Anti-Static Coat mm and you can measureSapphire 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: