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  1. 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 …

  2. 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.

  3. Diamond Carat: What Is Diamond Carat? | Tiffany & Co. US

    Carat denotes the weight of a diamond, not the size. Tiffany measures diamonds to 1/1000th of a carat; one carat equals .20 grams. Tiffany diamonds are always cut to maximize beauty, not …

  4. 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: …

  5. What is a Karat for Gold and a Carat for Diamonds? - wikiHow

    Aug 17, 2025 · A “karat” is a measurement used to determine the purity of gold, while a “carat” is a unit of weight used to measure fine gems, such as diamonds. These two words sometimes …

  6. Diamond Carat Weight | Understanding Carat Measurement

    Carat measures weight, not size. A carat is a standard milligram measurement of weight, recognized and used globally.

  7. Carat vs Karat - What's the Difference and Why It Matters

    Apr 24, 2025 · When comparing Carat vs Karat, remember that carat relates to diamond weight, while karat reflects the gold’s purity in your jewelry. The karat of gold jewelry directly affects its …

  8. 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.

  9. The Term ‘Carat’ Explained - Cape Town Diamond Museum

    'Carat' is a term used to describe the weight of a diamond, and the word originates from Ceratonia siliqua, commonly known as the Carob tree.

  10. 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.