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Diamond Carat Weight

Powers Jewelry Designers explains the basics in diamond certification here on our website so the Milwaukee diamond buying public can make educated diamond buying decisions. Whatever you don't understand about diamonds our gemological staff will gladly clarify. In the GIA certification system size certification is measured in Carats.

Carat, the standard unit of weight for diamonds and other gemstones, derives its name from the carob seed. Carob seeds have a fairly uniform weight making them ideal for early gem traders to use as counterweights in their balance scales. The modern metric carat, exactly 0.2 grams, was sanctioned by the United States in 1913 and adopted by the rest of the world soon after. Nearly one hundred years later a carat weighs exactly the same in every corner of the world including our Milwaukee diamond showroom.

Just as a dollar is divided into 100 pennies, a carat is divided into 100 points. For example, a 50-point diamond weighs 0.50 carats. It is important to know two diamonds of equal Carat weight can have very different values depending on the other three C's: clarity, color and cut. The majority of diamonds used in fine jewelry weigh one carat or less. At Powers Milwaukee diamond store you can choose from diamonds of all sizes in any price range.

Diamond Carat Chart
 0.50 ct 0.75 ct 1.00 ct   2.00 ct     5.00 ct

Even a fraction of a carat can make a considerable difference in cost. Precise accuracy is crucial in certifying carat weight. In the diamond industry, weight is often measured to the hundred thousandths of a carat, and rounded to one hundredth of a carat. Diamond weights greater than one carat are expressed in carats and decimals. (For instance, a 1.08 ct. stone would be described as "one point oh eight carats," or "one oh eight.")

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