Lab reports
Verify a gemstone lab report online — free
Find the report number, open the issuing lab's own check, and compare every line — weight, measurements, colour, treatment, origin — with the paper and with the stone. Most major labs run that check on their own website; below is where each one is and what it asks for.
A genuine report proves the lab issued it, not that the stone in front of you is the stone it tested. What a lab report can't prove
Look up a report
Pick the lab that issued the report and enter its number. The lab's own check opens in a new tab.
How to check
Four steps, at the lab that issued the report
Find the report number
It is printed on the report. Some labs ask for more: the report date, the weight, a Prooftag or a verification code. The list below says which.
Open the lab's own check
Use the links here or type the lab's address yourself. A QR code or a link from the seller's paperwork can open a lookalike site, so read the address bar.
Compare every line
Weight, measurements, shape and colour, species, treatment and comments, origin. A different weight, a missing treatment line or a softened comment is a reason to stop.
Know what a match proves
That the lab issued this report. Not that the stone in front of you is the stone it tested, or that nothing has changed since.
What a lab report can't prove
Where to check
Each lab's own check
What each lab asks for, the limits it sets out, and the way to its own check. Every link opens in a new tab.
Everystone is not affiliated with GIA, GIT, GRS, SSEF, Gübelin or AGL. Each link opens the lab's own service, and what it shows is the lab's record, not ours.
GIA
Gemological Institute of America
What you need
The report number. GIA asks for nothing else.
- The QR code on a current GIA report opens the same lookup; trust the page only if it is on gia.edu.
- Matching the stone to the report is a separate, paid GIA service (Report Verification): you submit the stone with its original report.
GIT
Gem and Jewelry Institute of Thailand
What you need
The GIT number, exactly as printed on the report.
- The online check covers items submitted from 1 July 2014, and details of reports issued before 2024 may appear incomplete. For those, contact GIT directly.
Open GIT's check (opens in a new tab)GIT Report Verification · git.or.th
GRS
GemResearch Swisslab
What you need
The report number, the report date and the weight, exactly as printed. For a pair of stones, the first weight.
- GRS limits its online support to five years, so an older report may not verify, and a very recent one may not be in the database yet. If it fails, contact GRS before you rely on the report.
Open GRS's check (opens in a new tab)GRS report verification · gemresearch.ch
SSEF
Swiss Gemmological Institute SSEF
What you need
The report number and the Prooftag reference number from the security label on the report.
- Compare the bubble pattern SSEF shows with the label on your paper; for reports issued after 11 July 2016, compare SSEF's PDF scan too.
- Reports dated before June 2009 have no Prooftag label and can't be checked online. For those, contact SSEF.
Open SSEF's check (opens in a new tab)MySSEF verification · myssef.ch
Gübelin
Gübelin Gem Lab
What you need
For documents issued after 2018, the document number and the verification code printed on the back. For older ones, the number, the date and the weight.
- The database holds documents less than ten years old.
- As of October 2026, Gübelin's website says online verification is unavailable because of a change of website platform. If the form does not respond, contact one of Gübelin's offices.
Open Gübelin's check (opens in a new tab)Gübelin Lab Document Verification · services.gubelingemlab.com
AGL
American Gemological Laboratories, New York
What you need
The report number and a clear scan of the report, sent to the lab.
- As of October 2026, AGL publishes no online report lookup. Ask the lab to confirm that it issued the report and that the details match its records, and keep its written reply.
- Other, unrelated labs use the initials AGL: check that the report names American Gemological Laboratories in New York.
Contact AGL (opens in a new tab)No online check · aglgemlab.com
Addresses and requirements as the labs published them in October 2026. Labs move their pages; if a link stops working, start from the lab's home page.
If the lab finds nothing, or anything differs
Re-type the number first: transposed digits are the usual cause. Check the lab's limits above. Then contact the lab directly, with details from its own website rather than from the paperwork, and don't pay until it answers. A “new system”, a “lab delay” or a report “still being printed” is the seller's explanation, not the lab's.
Questions people ask
How do I verify a GIA report online?
Open GIA Report Check on gia.edu and enter the report number; GIA asks for nothing else. The QR code on a current GIA report opens the same lookup, but trust the page only if it is on gia.edu. Then compare every field GIA shows with the paper and with the stone.
Which labs can I check online, and what do they ask for?
GIA, GIT, GRS, SSEF and Gübelin each have an online check on their own website. All of them ask for the report number. GRS also asks for the report date and the weight, SSEF for the Prooftag reference on the report's security label, and Gübelin for the verification code on the back of documents issued after 2018. AGL has no public online check: you ask the lab.
Does a genuine report prove the stone is the one tested?
No. A match proves the lab issued a report with that number and those findings. Whether the stone in front of you is that stone, unchanged since, takes a physical check against the report (weight, measurements, photograph), ideally by the lab itself. GIA offers this as its paid Report Verification service, and Gübelin as its Free Integrity Test.
Can I check an AGL report online?
Not on AGL's own website: as of October 2026, American Gemological Laboratories publishes no online report lookup. Contact the lab with the report number, ask it to confirm the details, and keep its written reply. Other, unrelated labs use the initials AGL, so check that the report names American Gemological Laboratories in New York.
The report checks out. Is it this stone?
Matching a report to the stone in hand (weighed, measured, compared) is what the optional Everystone Passport adds. In the shop, every lot shows how far it has been checked, an independent lab check can be added where a lot offers it, and your payment is held until you confirm the stone.