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Home > Terms > English, UK (UE) > Diffusion treatment
Diffusion treatment
Form of heat treatment that adds one or more chemicals to the heating process to change the colour of a gemstone. Typically the treatment does not penetrate deep into the stone, so gems treated in this way cannot be recut. Diffusion treatment is a standard treatment to increase the asterism effect in star sapphire.
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- Part of Speech: noun
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- Industry/Domain: Fashion
- Category: General jewelry; Gemstones
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