MOISSANITE CARAT SIZES

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Carat is a standard measurement of weight of precious gems. Most of us have heard of CARAT in conjunction with diamond weight as it is a rough indication of a gem's physical size. The lower the carat, the smaller the gem and lower price while higher carat means bigger gem and a higher price.  

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Moissanite is 18% lighter than diamond, so one carat of a moissanite weighs between 166-170 mg which translates to 0.83 - 0.85 carat of diamond equivalent weight (DWE). To express DEW, moissanite is cut to physical measurements that of an ideal cut diamond. So this means that a one (1.00) carat moissanite weights 0.83 - 0.85 carat DEW, but still measures 6.5 mm in diameter (round) making both one (1.00) carat diamond and one (1.00) carat moissanite visually appear as the same exact size. For this reason, moissanite size is expressed in mm rather than in carat.  Here is a list of the most common moissanite shapes along side with their mesurments in mm and diamond equivalent weight.