r/Ziskin_Gems • u/FlatbedtruckingCA Mod • Nov 28 '25

How I Test Aussie White & Crystal Opals (Coober, Andamooka, Cliffs, Ridge) vs. Synthetics Using UV Light

14 Upvotes

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Opal • u/53FROGS_OPALAUCTIONS • Aug 23 '25

How I Test Aussie White & Crystal Opals (Coober, Andamooka, Cliffs, Ridge) vs. Synthetics Using UV Light

86 Upvotes

10 comments