Step 4: Gem Grading
It is less than a century that gemology has been regarded as a science. Thanks to pioneering work by people like Robert M. Shipley Sr. and B. W. Anderson, a level of accuracy and repeatability was achieved that elevated the subject to the level of science. However, some elements of gemology are still an art. Color grading diamonds is a good example of this. Diamond color grading remains primarily an interpretation …
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