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Study on the effect of heat treatment on amethyst color and the cause of coloration | Scientific Reports
Lakeside Gems Rock Shop - FOUTS'S FUN FACT FRIDAY Almost all “commercial” Citrine is actually heat-treated Amethyst. An interesting fact is that heat-treated Amethyst will not show dichroism, a property where minerals
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Heat Treated Citrine vs. Natural Citrine vs. Baked Amethyst - New Moon Beginnings | New Moon Beginnings
![Crystals of citrine.. The sample is from Brazil and is heat treated amethyst quartz Stock Photo - Alamy Crystals of citrine.. The sample is from Brazil and is heat treated amethyst quartz Stock Photo - Alamy](https://c8.alamy.com/comp/2HX7F43/crystals-of-citrine-the-sample-is-from-brazil-and-is-heat-treated-amethyst-quartz-2HX7F43.jpg)