Are these opals natural or are they synthetic(besides treatment on the second image)? If the latter, what do you think is the production method? : r/Opals
Grandmother's large opal ring. But is it real or fake? : r/Opal
How Can You Tell if an Opal Is Real? | Angarajewelry
Real opal or Synthetic Opal, RatanSansaar - YouTube
How to identify synthetic opal - OpaleMio
How To Tell If an Opal Is Real (Tips From an Expert) - Rock Seeker
How to Tell If an Opal is Real? - Opal Minded
How can you see the difference between real and fake opal
Real or Fake? How can you tell?
How To Identify If Ethiopian Opal Is Real or Fake? | Gemexi
Is Ethiopian Opal Natural? How To Spot A Real From A Fake | Opal Auctions
How to tell if an opal is genuine? - The Dymocks Building
The Never-ending Battle - Natural Opal vs Synthetic | Opals Down Under
How to tell if an Opal is real | Opals Down Under
How to test for Treated or Fake Opals! | Opal Auctions - YouTube
Man-Made Synthetic Opal Rings – You Won't Find Them Here | Opal Auctions
Is My Opal Real? How To Spot A Fake Black Opal | Black Opal Direct
Opal Fakes - How to spot a fake Opal | Macs Opals
How Can You Tell if an Opal Is Real? | Angarajewelry
How to Tell if an Opal Is Fake: 5 Steps (with Pictures) - wikiHow
10 things about Synthetic Opal you need to know
