How We Verify Gemstone Certificates: Our Check Before Sending a Quotation

Quick Answer

When a dealer sends us a quotation for a gemstone, we run our own initial check before passing it on to the buyer — whether the certificate’s format matches known lab conventions, whether the report number is clearly recorded, and whether the dealer is transparent about the certificate. This is our own layer of diligence, not a substitute for the buyer’s own check.

Introduction

One of the responsibilities within our brokerage service is making sure that the quotations we pass on to a buyer look trustworthy at least at an initial level. Part of that is dealer verification — how we verify dealers — and the other part is our own basic check of the certificate that comes with a quotation. This article is about that second process — what we ourselves look at, on a certificate received from a dealer, before passing the quotation forward.

Recognizing the Certificate Format

Different gemological labs maintain a set format for their certificates — such as the lab’s name, logo, where the report number appears, and how information is recorded. When a dealer sends us a quotation with a certificate, we check whether it matches that lab’s known format. If anything about the format looks unusual, we ask the dealer for clarification before passing the quotation forward.

Cross-Referencing the Report Number

Every valid certificate carries a unique report number. We look at this number and check whether it matches the relevant lab’s numbering pattern and format. This isn’t a technical lab-level test — it’s a practical, initial check that helps flag certificates that look clearly incorrect or forged.

Paying Attention to Dealer Transparency

Dealers who are comfortable providing a certificate and give clear answers when asked about it are generally considered trustworthy. On the other hand, if a dealer repeatedly stalls, gives vague answers about a certificate, or avoids providing one without good reason, we stay cautious about that quotation. This also becomes part of that dealer’s overall standing within our network.

This Is Our Check, Not a Substitute for the Buyer’s Own Check

It’s important to be clear that this check of ours is an initial layer of diligence before passing a quotation forward — it cannot replace a lab-level technical test, nor is it a substitute for the buyer’s own check. Before finalizing a deal, the buyer should also examine the certificate carefully themselves. Read in detail about how to identify a genuine gemstone and the differences between certificates from labs like GIA, IGI, and GRS.

Quick Facts

Check Stage	What We Look At	Purpose
Format match	Whether the certificate matches a known lab format	Flagging clearly unusual certificates
Report number	Presence and pattern of the unique number	Reducing the risk of a forged certificate
Dealer transparency	Ease or reluctance in providing the certificate	Assessing dealer trustworthiness
Limitation	This isn’t a technical lab test	The buyer’s own diligence is still essential

Expert Tip: Before finalizing a deal, independently verify the report number on the certificate that came with the quotation on the relevant lab’s official website yourself — it’s the most reliable step you can take for your own protection.

Buying Advice

Whenever you receive a quotation from us, look carefully at the certificate, and if anything seems unclear, feel free to ask us. Our initial check is the first layer of your protection, but the decision to finalize a deal should always rest on your own satisfaction.

Key Takeaways

• We check the certificate’s format before passing a quotation forward.
• The report number is matched against the lab’s known pattern.
• We stay cautious about quotations from dealers who stall on providing a certificate.
• This is our initial diligence, not a substitute for the buyer’s own check.

Conclusion

Initial certificate checking is a responsible part of our brokerage process — an attempt to ensure that the quotations reaching you have at least passed a basic layer of diligence. Even so, always carry out your own check before the final decision. For any questions, get in touch with us.