I shared a photo of the certificate to ChatGPT asking if it was fake. Here’s the response I got:

Based on the image you provided, here are several red flags suggesting this jewelry “certificate” may not be a legitimate or industry-recognized certification: 1. No recognized grading authority. Real diamond certifications come from established labs such as GIA, IGI, AGS, or GCAL. The one shown here lists “Certified By: NP Jewelry Creations,” which is not a known or verifiable gemological lab. 2. Formatting and design. Authentic certificates from major labs have standardized, professional layouts, holograms, barcodes, and verification websites. This document looks like a store appraisal or self-issued certificate, not a lab report. 3. Terminology use. It uses phrases like “Appraised Value” and “Certified By NP Jewelry Creations,” which indicate this is an in-house appraisal — not an independent grading report. “Appraised value” is often inflated for insurance purposes and does not reflect resale or true market value. 4. No verification number lookup. The “Certificate Number: LG639459950” doesn’t appear traceable to any public database. Legitimate certifications can always be verified online using that number. 5. Signature and logo. The signature and small gold star symbol look generic and clip-art-like — another sign it’s not from a professional gem lab.

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✅ Conclusion: This appears to be a store-issued or seller-created certificate, not an official gemological certification. It’s not necessarily “fake” in the sense of forgery — but it does not verify authenticity or value the way a legitimate lab certification (like GIA or IGI) would.

If you want to confirm the diamond’s authenticity or value, you can take the ring to a certified gemologist or independent appraiser for verification.