Heat Treatment
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Definition
The controlled heating of a gemstone to high temperatures to improve or alter its color, clarity, or both, by inducing or dissolving inclusions and changing trace element oxidation states.
Detailed Explanation
O aquecimento controlado de uma gema a altas temperaturas para melhorar ou alterar sua cor, clareza, ou ambos, induzindo ou dissolvendo inclusões e alterando os estados de oxidação dos elementos traço.