This is a nice Lightning Ridge dark crystal opal with strong colors from all angles. You should have no problem finding a nice setting to put this stone in.
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Dark Crystal Opal
Video Watch on Youtube Country Of Origin Australia Region Lightning Ridge Carat Size 95 Color Red, Green, Multi Dome Medium, Low Brightness B3 Pattern Flashfire Body Tone N6 Hardness 5.5-6.5 Measurement 7.25mm round/ 2.84mm Calibrated Yes Inclusions No Treatments No Shape Round, Cabochon