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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
  • Carat | Weight, Measurement, Jewelry | Britannica
    carat, unit of weight for diamonds and certain other precious gems Before 1913 the weight of a carat varied in different gem centres
  • Carat (mass) - Simple English Wikipedia, the free encyclopedia
    Carat (mass) The carat is a unit of mass, which is used for gemstones and pearls One Carat is equal to 0 2g The current definition was adopted in 1907 at the Fourth General Conference on Weights and Measures [1] Officially, the carat can be divided into 100 points of 2 milligrams each
  • What is a carat? How many carats are in gold and in diamond?
    It tells you how many parts (of a total of 24) are pure 9-carat gold is the minimum accepted standard of gold in the UK, and 24 carat is the purest gold To add to the puzzle, the Carat number is not usually stamped on the metal
  • Carat vs. Karat: Whats The Difference? | Merriam-Webster
    In the jewelry world, 'carat' typically describes a unit for weighing precious stones, while 'karat' refers to the amount of gold in a piece Learn about the tree the words come from by reading more
  • 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
  • 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
  • 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
  • CARAT Definition Meaning | Dictionary. com
    A variant of carat is karat The former is usually used with diamonds and is a measure of weight, whereas the latter is usually used for gold and is a measure of purity





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