Synthetic Opal Ring Buying Guide: What to Know Before You Invest There is another way to spot a synthetic opal in a synthetic opal ring. When you go out to purchase opals, carry a UV torch along with you – synthetic opals showcase a fluoresce of deep green color under UV light. Thus, if your synthetic opal ring fluoresces, it means that the stone set in it is synthetic opal. visit now@ https://www.rananjayexports.com/blog/synthetic-opal-ring-buying-guide