amethyst


amethyst
amethystine /am'euh this"tin, -tuyn/, adj.amethystlike, adj.
/am"euh thist/, n.
1. a purple or violet quartz, used as a gem.
2. a purplish tint.
adj.
3. having the color of amethyst.
4. containing or set with an amethyst or amethysts: an amethyst brooch.
[1250-1300; < L amethystus < Gk améthystos not intoxicating, not intoxicated (so called from a belief that it prevented drunkenness), equiv. to a- A-6 + methys- (var. s. of methýein to intoxicate; see METHYLENE) + -tos verbal adj. suffix; r. ME ametist < AF ametiste < L]

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Transparent, coarse-grained variety of quartz that is valued as a semiprecious gem for its violet colour.

It contains a little more iron oxide (Fe2O3) than any other variety of quartz, and its colour probably arises from this iron content. Heating removes the colour or changes it to the yellow of citrine; most commercial citrine is made in this manner. Notable deposits are found in Brazil, Uruguay, Ontario, and North Carolina. The birthstone for February, amethyst is usually faceted with step cuts or emerald cuts but also has been used since ancient times for carved intaglios.

White-tipped amethyst from Guerrero, Mexico

Lee Boltin

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 a transparent, coarse-grained variety of the silica mineral quartz (q.v.) that is valued as a semiprecious gem for its violet colour. It contains more iron oxide (Fe2O3) than any other variety of quartz, and experts believe that its colour arises from its iron content. Other theories attribute the colour to contained manganese or hydrocarbons. Heating removes the colour from amethyst or changes it to the yellow of citrine; (citrine) most commercial citrine is made in this manner. Notable occurrences include Brazil, Uruguay, Ontario, and North Carolina.

      The name, derived from the Greek amethystos, “not intoxicated,” expresses the ancient folk belief that the stone protects its owner against drunkenness. In ancient writings the Latin name amethystus was used for amethyst, purple corundum, and purple garnet. Amethyst, the birthstone for February, is usually facetted with step cuts or emerald cuts, but has been used for carved intaglios since ancient times. Amethyst is mentioned in the Bible (Ex. 28:19; 39:12) as one of the 12 stones adorning the breastplate (oshen) of the high priests of Yahweh. Its physical properties are those of quartz.

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Universalium. 2010.

Look at other dictionaries:

  • Amethyst — Teil einer Amethyst Druse Chemische Formel SiO2+(Al, Fe, Ca, Mg, Li, Na) Mineralklasse Oxide; Metall zu Sauerstoff = 1:2 siehe Quarz (nach Strunz) siehe Quarz (nach …   Deutsch Wikipedia

  • Amethyst — Am e*thyst, [F. ametiste, amatiste, F. am[ e]thyste, L. amethystus, fr. Gr. ? without drunkenness; as a noun, a remedy for drunkenness, the amethyst, supposed to have this power; a priv. + ? to be drunken, ? strong drink, wine. See {Mead}.] [1913 …   The Collaborative International Dictionary of English

  • Amethyst — Sm (Halbedelstein) per. Wortschatz fach. (12. Jh.), mhd. ametiste, amatist Entlehnung. Entlehnt aus afrz. améthyste, dieses aus l. amethystus f., aus gr. améthystos f., zu gr. améthystos nicht trunken, dem Rausch entgegenwirkend , zu gr. methýein …   Etymologisches Wörterbuch der deutschen sprache

  • amethyst — (n.) violet quartz, late 13c., ametist, from O.Fr. ametiste (Mod.Fr. améthyste) and directly from M.L. amatistus, from L. amethystus, from Gk. amethystos amethyst, lit. not intoxicating, from a not + methyskein make drunk, from methys wine (see …   Etymology dictionary

  • amethyst — [am′i thist] n. [ME ametist < OFr ametiste < L amethystus < Gr amethystos, not drunken (the Greeks believed that the amethyst prevented intoxication) < a , not + methystos, drunken < methyein, to be drunken < methy, strong drink …   English World dictionary

  • Amĕthyst — (v. gr.), Art des Quarzes, ganz od. halbdurchsichtig (oft nur durchscheinend), gewöhnlich violenblau (Amethystblau), auch weißlich, grünlich, gelblich, graulich strahlig, mit stengeligen Absonderungen, fast reiner Kiesel, mit etwas Mangan u.… …   Pierer's Universal-Lexikon

  • Amethyst — Amethyst, Mineral (s. Tafel »Edelsteine«, Fig. 4), Varietät des Quarzes, findet sich meist in kurzgedrungenen, sitzend ausgebildeten Kristallen, ausgezeichnet durch violette, pflaumenblaue, auch nelkenbraune Farbe, zuweilen mit streifigen oder… …   Meyers Großes Konversations-Lexikon

  • Amethyst — Amethyst, s. Quarz …   Lexikon der gesamten Technik

  • Amethýst — Amethýst, Halbedelstein [Tafel: Edelsteine II, 37], eine durch organische Substanz violett gefärbte Varietät der Quarzes (s.d.), findet sich bes. in Achatkugeln, in den Blasenräumen der Mandelsteine. Der Haar A. schließt nadelförmige Kristalle… …   Kleines Konversations-Lexikon

  • Amethyst — Amethyst, ein schöner, violet gefärbter Halbedelstein. Er besteht aus Quarz mit etwas Manganoxyd (Braunstein) gefärbt. Man macht ihn nach, indem man dieses Mineral dem Glase (geschmolzener Quarz) zusetzt, wodurch eine Paste entsteht, welche zwar… …   Damen Conversations Lexikon

  • Amethyst — Amethyst, zur Ordnung der Kieselerde und Sippschaft des Quarzes gehörend, besteht nach einer Analyse von Rose aus 97,50 Kieselerde, 6,25 Thonerde, 0,50 Eisen und Manganoxyd; er ist sehr hart, so daß unsere Glaser den stängeligen statt des… …   Herders Conversations-Lexikon


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