The appreciation of a cut gemstone piece of precious opal requires discussion of the attributes of the Play-of-colour seen in the face of the opal. These attributes are separate from the normally discussed 4c’s of gemstone grading.
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The appreciation of a cut gemstone piece of precious opal requires discussion of the attributes of the Play-of-colour seen in the face of the opal. These attributes are separate from the normally discussed 4c’s of gemstone grading.
Read More