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Amethyst
[[Amethyst|250px]]
Type Gemstone
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Accessory mineral(s) {{{Accessory mineral(s)}}}

Amethyst is a violet variety of quartz. It is the birthstone of February. In acient times, people used this as a drinking glass because they believed that it would prevent intoxication. It is also commonly used as jewelry.


Chemistry Edit

Amethyst is a form of quartz, therefore its chemical composition is SiO2.

At the beginning of the 20th century, It was highly believed that that color of Amethyst was because of the presence of mangaese, but after further studies it was found that the color is due to aluminum and traces of iron.


When exposed to heat, amethyst will usually turn yellow, and much of the yellow quartz variations are said to be 'burnt amethyst'.

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