The 4Cs

Cut, Carat, Color and Clarity - are the universal language of the diamond.  Understanding this language will help you understand your diamond.


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The term "cut" has two references: One is the diamond's shape, the other is the quality, determined by its proportions, symmetry and polish. The top-selling diamond cut shape is the round brilliant. Other cut shapes including princess, marquise, pear, heart, oval, emerald, radiant, cushion and Asscher are considered fancy cut.
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Carat weight is the easiest to understand of the 4Cs. A diamond's weight is measured in carats. The carat is subdivided into 100 equal parts called 'points.' One point equals .01 carat or 1/100 carat.  A one carat diamond equals 100 points.  Carat weight is written in decimal numbers, but it is frequently expressed in fractions which are easier to understand. Diamond weight fractions are approximate and refer to ranges of weight. This chart from The Diamond Council of America® is a handy reference:

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