() 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.
Example Sentences:
(1) This alcohol screening test was developed for the 10 country AMETHYST project.
(2) Rose de France This pale amethyst is the new queen of gemstones.
(3) A substance with amethyst fluorescence was detected in the medium of adenosine-inhibited cultures of S. cerevisiae.
(4) The matte (mt) gene is linked to the previously described mandarin red (ma) gene, and the white puparium (wp) gene is linked to the white eye (we) and amethyst (am) loci.
(5) The proposed amethystic imidazobenzodiazepine Ro 15-4513 and ethanol (ETOH) were examined in rats using two operant procedures, differential reinforcement of low rates of responding (DRL), and drug discrimination learning (DDL).
(6) Promising drugs are discussed under six headings: agents to treat alcohol withdrawal; anticraving agents; agents that make drinking an aversive experience; agents to alleviate concomitant psychiatric problems; agents to treat concurrent drug abuse; and amethystic ("sobering-up") agents.
(7) They had been employed as stone sculptors in lapidaries where they processed tiger's-eye, rose quartz, amethyst, quartz crystal, and a variety of other locally occurring semiprecious stones.