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Gemstone Thermal Treatment

Started by Guest_Guest_*, Jul 08 2002 04:13 AM

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#1 Guest_Guest_*

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Posted 08 July 2002 - 04:13 AM

Is it customary to have sapphires and rubies thermally treated? Does this affect their value or durability in any way? Is there any pricing table or guidleine out there for sapphires?
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