DIAMOND 4CS

CARAT

Often misunderstood with size. The weight or size of a diamond is measured in carats (ct.). It’s useful to consider other attributes of a diamond also. For example, a diamond with a high carat with a poor cut will appear smaller then a diamond with a smaller carat but higher quality cut.

One carat weighs 1/5 of a gram and is divided into 100 points, this means a diamond weighing 1.28 ct. is referred to as “one carat and twenty eight points.”

For example,

  • 0.75 carat = 75 points
  • 1/2 carat = 50 points
  • 1/4 carat = 25 points

*TIP –  Diamonds of the same weight don’t necessarily have the same size appearance.

HISTORY

The term carat comes from the ancient method of weighing precious metal and stones against the seeds of the carob tree—which were considered to be even in weight. It wasn’t until 1907, at the Fourth General Conference on Weights and Measures, when it was agreed upon that one diamond carat would be equal to 200 mg, or .2 grams, of a diamond. Carats can also be measured in points; 100 points equals a full carat.

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