amethyst

Noun
  1. A transparent purple variety of quartz;
    Used as a gemstone (synset 114746750)
    is a type of:
    • quartz - a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
    • transparent gem - a gemstone having the property of transmitting light without serious diffusion
Adjective
  1. Of a moderate purple color (synset 300370794)
    similar to: chromatic - being or having or characterized by hue

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