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Grading Color in Rough
A piece of rough diamond which has the typical non- transparent skin.
This rough diamond is easily clarity graded since the skin is completely transparent. Commonly called a glassie.
Color can be just as deceptive as clarity in grading. Often the skin of the piece of rough hides the true tinted body color. For example, a rough piece with a greenish skin will most likely end up as a medium to dark yellow. Even in a glassie, color may end up two to three grades lower after finishing. If the buyer is working with a very close margin between the buying price and the predicted selling price, that will often bring disaster. A cutter may have a gut feeling for the color outcome, but 100% accuracy is never possible.
