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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
    The carat (ct) is a unit of mass equal to 200 mg (0 00705 oz; 0 00643 ozt), which 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, [1] [2] and soon afterwards in many countries around the world
  • CARAT Definition Meaning - Merriam-Webster
    The meaning of CARAT is a unit of fineness for gold equal to 1 2₄ part of pure gold in an alloy Frequently Asked Questions About carat
  • What is a carat? How many carats are in gold and in diamond?
    The Karat or Carat system measures metal purity as a fraction 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 That number is linked to the percentage of pure gold
  • CARAT | English meaning - Cambridge Dictionary
    CARAT definition: 1 a unit for measuring the weight of jewels (= precious stones) 2 a unit for measuring how pure… Learn more
  • 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 Originally based on the weight of grains or leguminous seeds, which, of course, varied in size from place to place, the carat was equivalent to 0 2053 gram (3 168 troy grains) in London , 0 1972 g in Florence
  • What Is a Carat? | Understanding Diamond Weight and Value
    A carat (ct) is a unit of weight used to measure diamonds and other gemstones One carat equals 0 2 grams, or about the weight of a paperclip Diamonds can range from a fraction of a carat to several carats in weight You’ll often see carat weight written in decimals (e g , 0 50ct for half a carat) or in points, where 100 points = 1 carat
  • Carat vs Karat - Whats the Difference and Why It Matters
    Learn the key difference between carat vs karat in jewelry Understand diamond weight vs gold purity before you buy Simple, clear, and essential
  • Carat vs Karat: What Are They And What Are They Used For - IFLScience
    A carat is a unit of weight for gemstones, not a unit of size One carat is equal to 200 milligrams or 0 2 grams (0 000440925 pounds) In jewelry, the higher the carat usually the higher the
  • Carat vs. Karat: Whats The Difference? - Merriam-Webster
    A carat is a unit of weight used to measure the size of a gemstone such as a diamond A karat is a measurement indicating the proportion of gold in an alloy out of 24 parts, so 18K gold is 18 24 parts gold
  • About Us | A Leader in Global Media Agencies | Carat
    We took the ambition of that small, French, first ever media agency; Carat, and scaled it to a powerful global network that consistently goes beyond for clients, today Why? Because it is better for people and better for brands





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