7.40ct Greenish Sapphire Oval Cabochon Slice 15.9x11.7mm Cutting Broach Set Ø0.70 to 3.00mm Bergeon 6759

Name: 7.40ct Greenish Sapphire Oval Cabochon Slice 15.9x11.7mm Cutting Broach Set Ø0.70 to 3.00mm Bergeon 6759
Brand: www.atlanticmarineservices.co.uk
SKU: 84204584664
Price: 321.50 USD
Availability: InStock
Rating: 4.704700000000001 (15 reviews)

SKU: 84204584664

4.7

USD321.50 USD347.50

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Description

Bergeon 6759

varying diameter dies for fitting flat mineral watch glasses

Face diameter: Ø70mm

Aquaplane Model 800 (1200)

7.40ct Greenish Sapphire Oval Cabochon Slice 15.9x11.7mm Cutting Broach Set Ø0.70 to 3.00mm Bergeon 6759Sapphire 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:

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