Amethyst

n. purple semi-precious stone; purplish color, violet

Amethyst is a purple variety of quartz often used as an ornament. The name comes from the Greek a ("not") and methustos ("to intoxicate"), 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.
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Noun
1. a transparent purple variety of quartz; used as a gemstone
(hypernym) quartz
Adjective
1. of a moderate purple color
(similar) chromatic

n. amethyst, purplish color, violet

A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone.

  

A purple color in a nobleman's escutcheon, or coat of arms.