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Gold Certificate Verification: How to Check a Certificate Is Real Before You Pay

A gold certificate is a document, and anyone with a laptop can make a document. That single fact explains why certificate fraud keeps showing up in gold deals. Buyers see a polished PDF with a logo and a serial number, feel reassured, and send the money. The gold that arrives, if any arrives, does not match the paper. This guide will tell you how to verify a gold assay certificate verification: or certificate of origin before you pay

This guide shows you how to verify a gold certificate before you pay. It covers the two documents most gold deals depend on, the checks that catch most forgeries, and the moments when no certificate can replace testing the gold yourself.

The Two Certificates Behind Most Gold Deals

Most deals rely on two separate documents, and each one answers a different question.

The assay certificate states how much gold, and often how much silver, a specific bar or batch contains. A laboratory or refiner issues it after testing a sample.

A genuine assay certificate can sit next to a forged origin certificate, and the reverse can happen too. Check both, and check them separately.

Five Checks for an Assay Certificate

Contact the lab yourself. Find the laboratory's phone number or email through its official website or an independent directory. Never use the contact details printed on the certificate, because a forger prints their own number there. Ask the lab to confirm that it issued a certificate with that number, date, and result.

Check the lab's accreditation. Reputable assay labs hold accreditation to ISO/IEC 17025, the international standard for testing laboratories. Look up the lab in the accreditation body's public directory and confirm that its scope covers gold assay. A lab without accreditation is not automatically fake, but you should test the gold somewhere else.

Match every number across every document. The lot or serial number, gross weight, and purity should agree on the assay certificate, the invoice, the packing list, and the marking on the bar itself. A different weight or a lot number with one digit changed is the most common sign of a recycled certificate.

Check the refiner if the bar carries a brand. The LBMA publishes its Good Delivery List of accredited refiners online. If a bar claims a listed refiner, confirm that the refiner appears on the list and ask the refiner how it verifies its own bars. Many honest sellers of dust and doré do not use listed refiners, so absence from the list only tells you the paperwork needs another source of proof.

Read the document itself. Look for a named signatory, a dated report, a lab address, and consistent fonts and spacing. Forgeries often show mixed fonts, blurry logos, or a certificate number that does not follow the lab's normal format. A skilled forger passes this check, so treat it as a filter and never as proof.

How to Check a Certificate of Origin

Start with the issuing authority. Find its official contact details on your own and ask it to confirm that it issued the certificate. Ask the seller for the export permit number as well, and compare the permit's date and quantity with the certificate and the shipment.


The location on the certificate matters as much as the stamp. A certificate that names “Africa” or “West Africa” tells you nothing. A useful certificate names the country and the mine, district, or licensed trading company. If the certificate names a country the seller never mentioned, ask why before you go further.

Our guide on how to import gold legally explains which documents customs officers and banks expect to see alongside the certificate of origin.

Why a Certificate Never Proves What Is Inside the Bar

A certificate describes a sample. It cannot prove that the bar in your hands came from that sample. Fraudsters know this, and the worst cases involve bars that carry a real-looking certificate and a core of a cheaper metal.

Tungsten weighs almost the same as gold, so a weight or density check alone will not catch a tungsten-filled bar. X-ray fluorescence (XRF) testers read only the surface layer, so a gold-plated core can pass. For bars, buyers rely on fire assay of a sample drilled from several points, or on ultrasonic testing, which picks up differences inside the metal.


Send your own sample to a lab you choose, and pay for the test yourself. Hold your payment until the result comes back. A seller who wants money first and testing later is telling you how the deal will end.

Red Flags That Should Stop the Deal

  • The seller sends the certificate as a screenshot or photo and will not send the original file
  • The lab cannot be found, or its phone number rings through to the seller
  • The lab that issued the certificate belongs to the seller or a friend of the seller
  • The same lot number appears on more than one shipment
  • The price sits below the spot price for the claimed purity
  • The seller pushes you to pay before you can test
  • The seller refuses a sample or an independent test

Documents to Request Before You Send Any Money

  • The original assay certificate as a file from the lab, with a certificate number and date
  • The certificate of origin and the export permit number
  • The invoice and packing list, both showing the same lot number and weight
  • The name and contact details of the lab and the issuing authority
  • Photos of the bar or sealed bag with its marking beside the lot number
  • Written agreement that you may test a sample before payment clears

Collect all six before you talk about price. A serious seller sends them the same day.

What to Do When a Check Fails

Stop the deal and keep every message, file, and payment detail the seller sent you. A failed check does not always mean fraud. A lab may have changed its phone number, or a clerk may have typed a digit wrong. Give the seller one chance to explain in writing, and ask for a corrected document that the issuer confirms directly.


If the seller cannot fix the problem within a few days, walk away. Report attempted fraud to your bank and to the police in your country, and warn your trade contacts. Sellers who fail verification rarely stop after one buyer.

How Africa Aurum Makes Verification Easy

Every shipment we send includes an assay report and a certificate of origin tied to that batch. We expect buyers to check both. For buyers interested in our Refined Gold, the same verification and documentation process helps support a transparent purchase. Our Au Gold Doré Bars are also supplied with the relevant documentation for buyers to review. Ask us which laboratory tested your batch and which authority issued the origin certificate, and contact them yourself before you pay. Send a sample to your own lab if you want a second opinion. This guide will tell you how to verify a gold assay certificate verification: or certificate of origin before you pay


Our purity verification guide explains how the main assay methods compare, and our import compliance guide covers the paperwork customs officers ask for.

gold certificate verification

Frequently Asked Questions

Contact the issuing laboratory through contact details you found on your own, and ask it to confirm the certificate number, date, and result. Check that the lab holds ISO/IEC 17025 accreditation for gold assay, and match the lot number and weight against the invoice and the bar.

Yes. Anyone can produce a convincing certificate, which is why a certificate alone never proves the gold is real. Verify it with the issuer and test the gold with an independent lab.

An assay certificate states the gold content of a bar or batch. A certificate of origin states where the gold was mined or exported from. Most gold deals need both.

XRF reads only the surface layer of a bar, so it can miss a plated core made of a cheaper metal. For high-value bars, buyers add fire assay of drilled samples or ultrasonic testing.

After. Hold payment until an independent test confirms purity, or use an arrangement such as escrow that releases funds only after verification.

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