1.06ct Octagon Cut Sapphire 7.3x3.8mm diamond tester

1.06ct Octagon Cut Sapphire 7.3x3.8mm diamond testerSapphire 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:

Wrist Watch - Far East - Graded

Storage Temperature: -10～50℃ (14～122℉)

Leaving both hands free this tools can be used by anyone whose profession or craft requires close accurate work

Length 230mm

Power Quantity Display: 0

1 * 73x52mm SS Flush Cut Knife Edge Scraper

The pressure exerted is multiplied many times by the unique lever design

copy machine

rock-solid stability

Package weight: 532g / 18

With two LED white lighting

Over-all accuracy: ± 1