Pay in 4 interest-free payments of $61.12 Learn more
Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Sampling Time: 0
Stone Setters Pliers
For fitting flat mineral glasses and backs for quartz watch cases
Sequence display mode
Compartment sizes: 65 (L) x 90 (W) x 21mm (D)
1.70ct Cushion Cut Sapphire 6.6x6.5mm Witschi Chronoscope X1 Generation 3 Sampling Time: 0Sapphire 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: