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Longman Dictionary of Contemporary English
carat
noun
COLLOCATIONS FROM OTHER ENTRIES
9/18/22/24 carat gold (=a measurement used to show how pure gold is)
COLLOCATIONS FROM CORPUS
■ NOUN
gold
▪ Different shades of superfine, 22 carat gold leaf are painted on to the hair during the highlighting process.
▪ Arrowcraft have canoe and Kayak figures made from nails and coated in 24 carat gold, ideal trophies at about £10.
▪ New from Morphy Richards comes a fabulous, 24 carat gold tong.
▪ Made in 18 carat gold it costs £380.
▪ The beautiful earrings, also in 18 carat gold, cost £740.
▪ There was no duty free ... A detail from the mark of service of John-Harrison which includes 22 carat gold leaf detailing.
▪ For that price, you get 7.98 grammes of 22 carat gold.
▪ Stars and stripes in 9 carat gold Beaverbrooks offers Beaverbrooks offer special incentives for brides on wedding purchases.
EXAMPLES FROM CORPUS
▪ Arrowcraft have canoe and Kayak figures made from nails and coated in 24 carat gold, ideal trophies at about £10.
▪ Different shades of superfine, 22 carat gold leaf are painted on to the hair during the highlighting process.
▪ It is often said that Godiva chocolates should not be valued in pounds, but rather in carats.
▪ It weighs 260. 37 carats.
▪ New from Morphy Richards comes a fabulous, 24 carat gold tong.
▪ Of the 26,000 carats of diamonds dispatched, over 23,000 carats were recovered, a success rate of over 90%.
▪ The beautiful earrings, also in 18 carat gold, cost £740.
▪ This ravishing heart-shaped 25 carat rock, at London-jeweller Graff, comes with a millionaire's price tag.
The Collaborative International Dictionary
Carat

Carat \Car"at\ (k[a^]r"[a^]t), n. [F. carat (cf. It. carato, OPg. quirate, Pg. & Sp. quilate), Ar. q[imac]r[=a]t bean or pea shell, a weight of four grains, a carat, fr. Gr. kera`tion a little horn, the fruit of the carob tree, a weight, a carat. See Horn.]

  1. The weight by which precious stones and pearls are weighed.

    Note: The carat equals three and one fifth grains Troy, and is divided into four grains, sometimes called carat grains. Diamonds and other precious stones are estimated by carats and fractions of carats, and pearls, usually, by carat grains.
    --Tiffany.

  2. A twenty-fourth part; -- a term used in estimating the proportionate fineness of gold.

    Note: A mass of metal is said to be so many carats fine, according to the number of twenty-fourths of pure gold which it contains; as, 22 carats fine (goldsmith's standard) = 22 parts of gold, 1 of copper, and 1 of silver.

Douglas Harper's Etymology Dictionary
carat

also karat, mid-15c., from Middle French carat "measure of the fineness of gold" (14c.), from Italian carato or Medieval Latin carratus, both from Arabic qirat "fruit of the carob tree," also "weight of 4 grains," from Greek keration "carob seed," also the name of a small weight of measure (one-third obol), literally "little horn" diminutive of keras "horn" (see kerato-).\n

\nCarob beans were a standard for weighing small quantities. As a measure of diamond weight, from 1570s in English. The Greek measure was the equivalent of the Roman siliqua, which was one-twentyfourth of a golden solidus of Constantine; hence karat took on a sense of "a proportion of one twentyfourth" and became a measure of gold purity (1550s). Eighteen carat gold is eighteen parts gold, six parts alloy. It is unlikely that the classical carat ever was a measure of weight for gold.

Wiktionary
carat

n. 1 A unit of weight for precious stones and pearls, equivalent to 200 milligrams. 2 Formerly, any of several units of weight, varying from 189 to 212 mg, the weight of a carob seed. 3 A measure of the purity of gold, pure gold being 24 carats.

WordNet
carat
  1. n. a unit of weight for precious stones = 200 mg

  2. the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold [syn: Karat]

Wikipedia
Carat (board game)

Carat is an abstract tile laying German style board game designed by Dirk Henn and published in 1993 by Queen Games and db Spiele. In 2004, after the success of Alhambra, Queen Games released an updated version of the game with an Arabian theme called Die Gärten der Alhambra.

Carat (mass)

The carat (ct) is a unit of mass equal to 200  mg (0.2 g; 0.007055 oz) and is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, and soon afterwards in many countries around the world. The carat is divisible into one hundred points of two milligrams each. Other subdivisions, and slightly different mass values, have been used in the past in different locations.

In terms of diamonds, a paragon is a flawless stone of at least 100 carats (20 g).

The ANSI X.12 EDI standard abbreviation for the carat is CD.

Carat

Carat, karat, karet or karot may refer to:

In jewelry making:

  • Carat (mass), a unit of mass for gemstones, equal to 0.2 gram
  • Karat, a unit for measuring the fineness of gold

In Aviation

  • SDB Karat, a Russian ultralight trike design

In Judaism:

  • Kareth or Karet, a biblical punishment decreed by Heaven (from the Hebrew verb karat "to cut off")

In entertainment:

  • Carat (board game), an abstract tile-based German-style board game
  • Karat (band), a rock band from East Germany

In media and advertising:

  • Carat, Sifow's 3rd single
  • Carat UK, UK advertising agency

People:

  • Prakash Karat, Indian politician, General Secretary (2005-) of Communist Party of India (Marxist)
  • Brinda Karat, Indian politician, Member of Parliament
  • KARAT, a KGB codeword for former FBI Agent & convicted spy Robert Hanssen

Places:

  • Karat, Hormozgan, a village in Hormozgan Province, Iran
  • Karat, Khuzestan, a village in Khuzestan Province, Iran
  • Karat, Razavi Khorasan, a village in Razavi Khorasan Province, Iran
  • Karat Rural District, an administrative subdivision of Razavi Khorasan Province, Iran
  • Karot, Pakistan village in the Punjab, Pakistan

Military:

  • Programme CARAT, Cooperation Afloat Readiness and Training, annual held naval exercise of the armed forces the United States, Brunei, Indonesia, Malaysia, the Philippines, Singapore and Thailand.

Other:

  • Karat banana, a cultivated variety or group of cultivated varieties of banana found in the Pacific Islands
  • Karat (airline), an airline in Russia
  • AMS Carat, a motorized sailplane
  • Karat, an early Agfa cartridge for 35 mm film

Usage examples of "carat".

Unmarked stones were generally sold in lots of much smaller carat size.

So the price per carat rises sharply as the total weight of the stone increases.

Small stones, to be sure, not one of them more than half a carat, but diamonds for all that, and some of them of excellent quality.

Perhaps its simply an inferior alloy, such as ten carat gold, or even eight.

They were set in a nine-million-dollar pair of earrings, each carat costing three hundred thousand dollars.

If six carats was too small, she doubted that seven and a quarter would do, but you never could tell.

He had some carved Mughal rubies in his own collection, but nothing more than ten carats, and nothing of the quality of the Montegeau ruby.

I tell you with absolute certainty there are millions of carats of diamonds lying in the crotch of Thunderbolt and Suicide.

The smallest of these stones weighed fourteen carats, the largest a formidable fifty-six carats.

Two perfect diamonds of ten or twelve carats each, and perhaps five smaller ones.

It would not allow a stone over four carats to pass through, and it screened out fixed percentages of the smaller stones - allowing only a proportion of the smaller and less valuable diamonds to proceed through into the main X-ray room.

The Jubilee Diamond, a superb 245-carat cushion of unearthly fire fashioned out of 650-carat rough - then the biggest of them all, a monstrous rough stone of 3,106 carats, the Cullinan which yielded not one, but two paragons.

The Great Star of Africa at 530 carats and The Cullinan II at 317 carats.

Each time the reply had been consistent - not a single stone over four carats, and a very precious few of any others.

The computer ended by giving the grand total of carats recovered, and Johnny spoke for the first time.