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if it means inches. i still don't know what a 7mm means. i just want to know what carat it is?
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MM is the abbreviation for millimeter- a measure of size. 25.4 mm = 1 inch. 7mm is just larger than a quarter inch. It has no connection to purity of gold, which is measured in karats (k not c) Carat with a C refers to the weight of a gemstone.
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What does mm mean on a meterc scale?
millimeter-mm centimeter-cm kilometer-km SO MILLIMETER
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thickness of material
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