Opal Grading

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“A” GRADE Suitable for finest quality jewelry pieces.
Brilliance or Luster The Fire in the colors should be clear, crisp, and fullysaturated.
Body Color Very dark gem body with full colors showing and no cloudiness.
Pattern Should be large Broad flash patterns such as harlequin, rolling flash and classic straw.
Natural Inclusions None to the naked eye.
“B” GRADE Suitable for good quality jewelry pieces.
Brilliance or Luster Good bright Fire in the colors that is easily seen.
Body Color Medium dark background.
Pattern All patterns.
Natural Inclusions Some small natural inclusions that do not affect the overall appearance and value but can be seen when magnified.
“C” GRADE Commercial grade ideal for market jewelry pieces and new jewelers.
Brilliance or Luster Fairly good undefined colors.
Body Color Varied light to dark background with some possible cloudiness.
Pattern Small undefined patterns.
Natural Inclusions May have small natural inclusions

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