Moissanite Carat Weight Guide

Moissanite Clarity

Carat is the traditional measuring unit of a diamond's weight (1 carat = 200 milligrams). A carat is divided into 100 "points," so the same diamond can be represented as weighing a carat and a half, 150 points or 1.50 carats. Moissanite stones are about 15 - 18% lighter than diamonds. Therefore, while a 6.5mm round diamond weighs 1.0 carat, a 6.5mm moissanite weighs 0.83 - 0.85 carat. However, the two stones would be the same actual size: 6.5mm in diameter.

In order to minimize the confusion this can create, all stones are listed on Moissanite Co. with their actual size in mm and/or the diamond equivalent in carats.

Please reference our loose stone page for the full size to diamond equivalent carat weight conversion table.

To help our customers visualize the actual size of the Moissanite gemstones, we provide the following Actual Stone Size Comparison Chart. Once downloaded and printed, it will show the actual stone size of each of the various size stones.

The file is .pdf format and required Adobe reader to view. It can be downloaded for free here.

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