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What is the standard to classify the quality of diamond?

April 26, 2017classify diamond quality standard

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What is the standard to classify the quality of diamond?

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There are a few kinds of criterions to classify the quality of diamond, including crystal shape, strength, impact toughness, thermal stability, etc. So diamond always is classified into a few series according to their characteristics, for example, SUKAN diamond can be classified into RSD, RBD, RMD and RRB series.