The following information is from the website:- http://en.wikipedia.org/wiki/Amethyst
Amethyst is a violet variety of quartz often used in jewelry. The name comes from the Ancient Greekἀa- ("not") and μέθυστοςmethustos ("intoxicated"), a reference to the belief that the stone protected its owner from drunkenness; the ancient Greeks and Romans wore amethyst and made drinking vessels of it in the belief that it would prevent intoxication.
The hardness (Mohs scale) : 7.0 - lower
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