5.57ct Oval Faceted Sapphire Certified Unheated 11.8x8.3mm Watch Case Opener

5.57ct Oval Faceted Sapphire Certified Unheated 11.8x8.3mm Watch Case OpenerSapphire 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:

Spare Blade for Product Code C32258

The rings are used to test the size of your finger

Auto-off Protection

To polish gold

40 and 50gm

Package Size: 22 * 15 * 3

1200 Grit (Red)

Supplied on wooden stand

These are high quality 3mm abrasive stone grinding head wheels for Dremel electric grinding accessories

iron ornaments and sculptures etc

Mini Horotec professional precision press

Package Weight: 163g / 5