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Opals from official Government Heritage site in Australia.
How to Assess the Value of an Opal: A Beginner's Guide to Pricing
![How To Value Opal - The 10 Factors [Guide] | Opal Auctions](https://df2sm3urulav.cloudfront.net/tenants/oa/uploads/content/5968374a6beb1.jpg "How To Value Opal - The 10 Factors [Guide] | Opal Auctions")
How To Value Opal - The 10 Factors [Guide] | Opal Auctions
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Opal Value, Price, and Jewelry - International Gem Society
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Opal Stone Price around the World - Opal Jewelry - Opal Pendants, Opal Rings, Opal Bracelets & Earrings
