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    Diamond Buying Guides

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  • Diamonds: A Girl's Best Friend
    Diamond Information

  • Selecting Diamonds
  • How Diamond Prices Are Determined
  • How To Buy Diamond Engagement Rings
  • About Diamond Weights
  • All About The Clarity Of Diamonds
  • Diamond Certificates
  • Diamond Grading Reports
  • How Are Diamonds Cut
  • Are Diamonds Really Rare?
  • Bonded Diamonds
  • Buying Diamonds Online
  • Choosing The Cut Of A Diamond
  • Synthetic Diamonds
  • What Are Dirty Diamonds
  • Colored Diamonds
  • Diamond Brands And What They Mean
  • Diamond Scams
  • Famous Diamonds
  • How Are Diamonds Mined
  • How To Care For Your Diamond
  • How To Clean Your Diamonds
  • How To Sell A Diamond
  • How To Spot A Fake Diamond
  • Insuring Your Diamonds
  • Where Diamonds Are Mined

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    About Diamond Weights

    Diamonds are measured in Carat Weight.

    One carat weighs 200 milligrams. If a diamond is referred to as four grains, this also means that it is a one carat diamond.

    The word Carat comes from the word carob.

    A carob is a bean that grows on a tree in the Mediterranean. In times past, if a diamond weighed the same as a carob bean, it was one carob, or one carat.

    However, in the far east, where Carob trees do not grow, rice was used to measure the weight of a diamond. If a diamond weighed as much as four grains of rice, it was four grains – or one carat as we know it to be now. The majority of diamond purchases are for diamonds that are 1/3 of a carat.

    Beware when shopping for diamonds that are already set or mounted. If more than one diamond is used in the piece, the tag on the jewelry will give the CTW or Carat Total Weight – it does not tell you the carat weight of each stone in the piece. You need to ask the jeweler for the total carat weight of the largest diamond in the piece to truly understand what you are buying.

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