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carat    音标拼音: [k'ɛrət]
n. 克拉

克拉

carat
n 1: 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
[synonym: {karat}, {carat}, {kt}]

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.
[1913 Webster]

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.
[1913 Webster]

2. A twenty-fourth part; -- a term used in estimating the
proportionate fineness of gold.
[1913 Webster]

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.
[1913 Webster]


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  • Carat (mass) - Wikipedia
    An 'international carat' of 205 milligrams was proposed in 1871 by the Syndical Chamber of Jewellers, etc , in Paris, and accepted in 1877 by the Syndical Chamber of Diamond Merchants in Paris
  • CARAT Definition Meaning - Merriam-Webster
    Precious stones are weighed in carats; a single carat is equal to 200 milligrams Carat is also a variant spelling of karat, which measures the purity (but not the weight) of gold
  • What Is a Carat? Jewelry’s Most Misunderstood Term
    A carat is a unit of weight used to measure gemstones and pearls One carat equals 200 milligrams or 0 2 grams The heavier the stone, the higher its carat weight Important note: Carat weight is not the same as gemstone size
  • Carat vs karat what’s the difference? - jewelersmutual. com
    A carat is the unit used when measuring the weight of a gemstone, such as diamonds, rubies, sapphires and emeralds Specifically, the weight of a carat is equal to 200 milligrams, or 0 2 grams
  • What is a Carat And Is It Related To Karat? - Gem Rock Auctions
    Each carat is approximately two hundred milligrams (0 2 grams) or one fifth of a gram The definition of Carat is only correct when referring to gemstones and should not be confused with the meaning of karat when referring to gold As far as gold is concerned, karats denote its purity
  • Diamond Carat: What Is Diamond Carat? | Tiffany Co. US
    Carat denotes the weight of a diamond, not the size A diamond may have a higher carat weight without appearing larger; and two diamonds of the same carat weight can vary in size if one is cut deeper than the other
  • What are Carats? | Diamond Carat Explained | GoldFellow
    Carats are a metric unit of weight used in the weighing of diamonds and other gemstones One carat weighs 2 grams The term carat is derived from the seed of the carob tree – a tree which flourished in the Mediterranean region and whose seeds were used in gem trade
  • CARAT Definition Meaning | Dictionary. com
    CARAT definition: a unit of weight in gemstones, 200 milligrams (about 3 grains of troy or avoirdupois weight) c , ct See examples of carat used in a sentence
  • Diamond Carat Size Chart: How Big Is Each Carat on Your Hand?
    How big does each diamond carat size actually look? See real size comparisons from 0 5 to 5 carats, learn what affects perceived size, and understand how carat weight drives value
  • carat - Wiktionary, the free dictionary
    Noun carat (plural carats) A metric unit of mass equal to exactly 200 mg, chiefly used for measuring precious stones and pearls





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