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Why is Moissanite sold by millimeter (MM) and not by carat weight?

April 26, 2017millimeter mm moissanite sold weight

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Why is Moissanite sold by millimeter (MM) and not by carat weight?

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In order to fit available settings, it is easier for jewelry manufacturers to order Moissanite by millimeter. The specific gravity of Moissanite is 3.21 grams per cubic centimeter, so a 6.5mm Round Brilliant Moissanite jewel is approximately 0.87 carats. Thus, Moissanite weighs less diamonds but are the same in diameter for their respective sizes. So, if you take a jewel to a jeweler and they weigh the stone do not be confused as to the weight, the jewel should be measured with a millimeter gauge for correct sizing.