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AMMOLITE gem stone rough Red Green Freeform cabochon cabbing jewelry Ammonite opal 9 grams 45 ctw
When it is at different angles the colors vary and become more or less brilliant ( angled one way very iridecent and bright and angled another way it is almost like wood and has been compared to a black opal ) - The thinner primarily skin ones may show colors on the back - The value of the finished ammolite is based on the intensity of color , if the colors show more face on ( directional ) and the colors ( blue , purple , pink, and gold are more rare so those are more valuable where blue and purple...
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