amethyst

noun

1. A transparent purple to violet variety of quartz with traces of manganese, used as a gemstone.

   “The burning evening sun lighted with mellow gold the coats of the fierce little tiger-kittens — orange silk with stripes of black velvet — the broken amethysts and ruined emeralds of the poor bird's train cruelly scattered over the trampled grass”

   “Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)”

2. (uncountable)A purple colour.
3. The tincture purpure, when blazoning by precious stones.

   “The Field is Topaz, a Lion rampant Amethyst [...]”

   “Purple, on the arms of princes Mercury, of peers amethyst, and of commoners purpure, [is represented] by diagonal lines from the sinister chief to the dexter base.”

   “1st & 4th grand Quarter alike viz. Field Pearl, on a bend Sapphire 3 Buckheads, coup'd topaz for Stanley. The 2d Quarter, Field Sapphire with an inverted Chief, amethyst. The 3d, A Checque topaz & Amethyst, this seems prior to Bosworth field, to have belong'd to Sr Robt Goushill whose Dr a Stanley married …”

adj

1. Having a colour similar to that of the gemstone

name

1. A female given name.

   “The Australian rapper Iggy Azalea was born Amethyst Amelia Kelly.”