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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
  • Carat vs. Karat: Whats The Difference? | Merriam-Webster
    Carat vs Karat The name carat derives, via Medieval French and Italian, from Arabic qīrāṭ, meaning "bean pod," which is itself from Greek keration, referring to both the carob bean and a small weight Early in the 20th century, the weight of the carat was set at 200 milligrams, or 0 2 grams
  • Carat Global Media Marketing Agency | Carat
    For scaled brands looking for a global marketing and media buying agency, Carat is the gateway to dentsu With our bespoke approach to client partnerships, we innovate to drive both immediate performance and longer-term transformation
  • Carat - Wikipedia
    Carat may refer to: Carat (mass), a unit of mass for gemstones and pearls Carat, or Karat, a fractional measure of purity for gold alloys Carat (board game) "Carat", a 2007 music single by Sifow Carat (Centrale d'Achats Radio, Affichage, Télévision), now the Dentsu International communications company Cooperation Afloat Readiness and Training, a naval exercise Volkswagen Carat, a car model
  • Diamond Size Chart: MM vs Carat Comparison - BlueStone Blog
    A 2-carat diamond is not twice as large in mm as a 1-carat one It’s roughly 25-30% larger in diameter because volume (weight) grows quicker than surface area Your Go-To Diamond Size Chart: MM vs Carat for Round Diamonds Now on to the good stuff, the diamond size chart Here is an easy round diamond size chart based on average well-cut stones:
  • Carat vs karat what’s the difference? - jewelersmutual. com
    Though they sound alike, “carat” and “karat” refer to two very different aspects of jewelry—gemstone weight and gold purity Carat measures the weight of gemstones like diamonds Karat indicates the purity of gold, with 24 karats being pure gold and lower numbers representing gold mixed with other metals The terms have shared roots in the Greek word keration, once used as a standard
  • What is a carat? How many carats are in gold and in diamond?
    18 carat or 18-carat gold is 75% gold This is the highest purity for white gold, which requires a substantial amount of silver and or platinum to obtain the white colour
  • Carat — The Creative AI Agent, with just a chat interface
    Generate videos, images and more through a simple chat Carat suggests fresh variables and lets you switch AI models like GPT or Gemini
  • Carat in Jewelry: Meaning and Weight Explained
    Learn what carat means in jewelry, how it measures gemstone weight, why carat size doesn't always match visuals and how carat alone doesn't tell the full story





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