Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun amethyst

1 sense of amethyst

Sense 1
amethyst -- (a transparent purple variety of quartz; used as a gemstone)
       => 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)

Antonyms of adj amethyst

1 sense of amethyst

Sense 1
amethyst -- (of a moderate purple color)

INDIRECT (VIA chromatic) -> achromatic, neutral -- (having no hue; "neutral colors like black or white")

Similarity of adj amethyst

1 sense of amethyst

Sense 1
amethyst -- (of a moderate purple color)
       => chromatic (vs. achromatic) -- (being or having or characterized by hue)