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seam edge grinding process
Measurement unit switchable: mm and mil
The grooved graphite crucible is designed for easy removal from the furnace using specially designed crucible tongs
The media and any compound you use should just barely be wet with no standing water It is advised to clean your magnetic finisher pins after each batch
can set a high or a low humidity limit
7.31ct Oval Cabochon Star Sapphire 12.6x9.7mm hand press seam edge grinding processSapphire 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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