Opal · Certification
Certified Natural Opal: What to Verify
An opal certificate should state whether the stone is a solid natural opal or a constructed doublet/triplet, since these are legitimate but must not be priced or sold as solid material. It should also confirm the material is natural rather than synthetic opal or glass imitation, and note body tone classification (black, crystal, white) which materially affects value.
Our authenticity standard for Opal
Whenever a certificate is available, it's shared with you before you pay — the same commitment described in full on our site-wide Authenticity & Certification page. Because our dealer network sources through multiple independent gemological laboratories, the specific issuing lab may vary by stone; what stays constant is that the report is independent, not a seller's own letterhead.
Once you have a report number, most independent laboratories offer free online verification — compare the certificate in your hands against what the lab's own database shows before finalizing any purchase.
Ready to see it applied to a real stone? See current Opal buying guidance and Opal pricing.
Common Opal Certification Questions
How do I know if my opal is solid or a doublet/triplet?
An independent gemological report will state the construction type explicitly — solid, doublet, or triplet — since this isn't always obvious from the front of a set stone.
Have a Certificate You'd Like Explained?
Our team is happy to walk you through any opal report before you buy.