Spinel is rarely treated, but some heated spinels are available in the gem trade due to demand. This report by researchers at GIA is a must read for gemologists, gem treatment specialists, gem dealers, jewelers and consumers.
Spinel is rarely treated, but some heated spinels are available in the gem trade due to demand. This report by researchers at GIA is a must read for gemologists, gem treatment specialists, gem dealers, jewelers and consumers.
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