amethyst


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to amethyst: birthstones

amethyst

(ăm`əthĭst) [Gr.,=non-drunkenness], variety of quartzquartz,
one of the commonest of all rock-forming minerals and one of the most important constituents of the earth's crust. Chemically, it is silicon dioxide, SiO2.
..... Click the link for more information.
, violet to purple in color, used as a gem. It is the most highly valued of the semiprecious quartzes. It is associated with a number of superstitions, being regarded as a love charm, as a potent influence in improving sleep, and as a protection against thieves and drunkenness. Brazil, Uruguay, Siberia, Sri Lanka, and parts of North America are important sources of supply. The so-called Oriental amethyst, or purple sapphire, is not quartz but a variety of corundum, a much harder and rarer stone.

Amethyst

 

a mineral, a violet or sky blue-violet variety of quartz (SiO2). On heating to 300–350°C, amethyst becomes yellow or is discharged. Decolorized amethyst reacquires its color after exposure to X rays. The mineral occurs in quartz veins, granitic rocks, amygdules of volcanic rocks, and sometimes in sedimentary rocks, such as silicon salts. The best specimens are used for jewelry and as ornamental stones. Especially fine are amethysts from the Urals and Brazil. A blue-violet variety of corundum is known in the jeweler’s craft as eastern amethyst.

amethyst

[′am·ə‚thist]
(mineralogy)
The transparent purple to violet variety of the mineral quartz; used as a jeweler's stone.

amethyst

February. [Am. Gem Symbolism: Kunz, 319–320]

amethyst

preserved soldiers from harm; gave them victory. [Gem Symbolism: Kunz, 58]

amethyst

provides protection against drunkenness; February birthstone. [Gem Symbolism: Kunz, 58–59]

amethyst

1. a purple or violet transparent variety of quartz used as a gemstone. Formula: SiO2
2. a purple variety of sapphire; oriental amethyst
3. the purple colour of amethyst
References in periodicals archive ?
Lewis Coolidge was a nephew of Billy Dawes, the man who accompanied Paul Revere on his ride: Coolidge made a five-year voyage around the globe aboard the Amethyst, and his private diary of his journey offers insights into 19th century sealing trade practices and the social sentiments and culture of his times.
They include: Cricket, begins December 28 with discounts on selected lines; Vivienne Westwood, from December 27 with 50% off initially; Corsetorium, sale continues, 50% off What Katie Did lingerie and Leg Avenue, plus 20% off other lines; Kids Cavern, all items half price from December 27; Amethyst, above, 50% off selected items as the sale continues in store; Drome, 40% off selected lines including Manish Arora, the Drome exclusive label in Liverpool worn by Katie Perry during the MTV European Music Awards.
Amethyst helps to enhance our memory and stops us being anxious about things.
The Amethyst Group has over 30 years warehousing and logistics experience in the auto industry.
The new property is now the headquarters of Amethyst's consumer products division in Amethyst House on Fletcher's Way.
Ladies yellow gold, amethyst (purple) stone, 2 diamond chips, stackable-type ring, size 6
In the late 18th/early 19th century, the amethyst enjoyed its most favoured period when, due to its apparent rarity, the stones were both very expensive and highly regarded.
Amethyst Mine Panorama has been selected as a Rand McNally & Co.
The crystal structure of amethyst makes it one variety of the mineral quartz.
They broke into the 64-year-old woman's home in Hayes Lane and helped themselves to gold chains and bracelets, plus two amethyst and diamond rings and an amethyst and pearl gold antique ring, with the initials TLM inside.
THE British frigate HMS Amethyst came under fire from Chinese Communist shore batteries on the Yangtse on April 20, 1949, and ran aground off Rose Island.