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How to tell a fake opal or Synthetic opal from the real thing by www.blackopaldirect.com - YouTube
How to Tell if an Opal Is Fake: 5 Steps (with Pictures) - wikiHow
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.jpg "Jewelry Making Article - Opal: Benefits of Synthetic and Manmade Stones - Fire Mountain Gems and Beads")
Jewelry Making Article - Opal: Benefits of Synthetic and Manmade Stones - Fire Mountain Gems and Beads
How to Tell If an Opal Is Real of Fake?
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How to test for Treated or Fake Opals! | Opal Auctions - YouTube
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How do you know if an Opal is Real? - Opal Galaxy
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