GEM
Gemological Laboratory
Legal
Last updated: September 2026
These Terms of Service (the "Terms") apply to every service provided by GEM Gemological Laboratory ("GEM", "the laboratory", "we" or "us"), to every GEM report, and to the use of labsgem.com. By submitting an item, relying on a GEM report or using this website, you accept these Terms. If you do not accept them, please do not use our services.
GEM is an independent laboratory that examines, grades, identifies and authenticates diamonds, colored gemstones, jewelry and luxury watches, and issues reports describing its findings. GEM does not buy, sell, broker or trade any item it examines. Our only role is to provide a professional examination.
A GEM report describes the characteristics of the item submitted, as established by the methods and instruments available to the laboratory on the date of examination. Different instruments, methods or laboratories may lead to different results.
A report is a professional opinion. It is not a guarantee, a warranty, a certificate of value or a statement of fact, and must not be presented as such. The terms used on GEM reports follow GEM's own grading standards.
Where a report shows an estimated value, it is stated in US dollars, reflects GEM's professional estimate on the date of issue and is indicative only. It is not a formal appraisal, an insurance valuation or an offer to buy or sell.
Weights of mounted stones and other measurements that cannot be taken directly are approximate. Mounted stones are graded only as far as the setting allows.
Gemological grading involves professional judgment. Another laboratory, or another gemologist, may reach a different grade or conclusion for the same item. GEM does not undertake that any other party will agree with its findings.
GEM uses screening and identification instruments to detect laboratory-grown diamonds, synthetic materials and treatments. These technologies continue to develop, and GEM's findings are limited to what could be detected with the means available on the date of the report. GEM is not responsible for later changes in identification resulting from new technologies or methods.
Each report relates only to the specific item, in the exact condition in which it was examined. GEM cannot confirm that an item later offered for sale is the item it examined. Any alteration, substitution, re-setting, re-cutting, treatment or inscription made after examination voids the report. A report that has been altered, or that does not match its record in the GEM online registry, is void.
GEM's findings are based solely on professional laboratory examination. To the fullest extent permitted by law, GEM, its employees and agents accept no responsibility or liability for any loss, damage, cost or claim of the client or any third party arising from the issue, content, publication, use of, or reliance on a report, including errors or omissions, even if GEM was advised that such loss could occur.
Where liability cannot be excluded by law, it is limited to the fee paid for the report concerned.
GEM is not a party to any sale or purchase. Statements made by a seller about an item's value, investment potential, origin or quality, even when they refer to a GEM report, are the seller's sole responsibility. GEM is not responsible for any difference between such statements and its findings.
A GEM report may be shown to buyers, insurers and appraisers. It may not be used, in whole or in part, in advertising or promotion, and does not grant any right to use the GEM name, logo, seal or other marks without GEM's prior written consent.
GEM aims to keep every report available for verification at labsgem.com, but does not guarantee uninterrupted availability of the online registry. If a printed report is lost, a replacement is issued only after the item is resubmitted and confirmed to be the same item.
All content on labsgem.com, including text, images, logos, designs and software, belongs to GEM or its licensors and is protected by law. It may not be copied, distributed or modified without GEM's written consent.
You agree to indemnify GEM, its officers, employees and agents against any claim, loss or expense, including reasonable legal fees, arising from your breach of these Terms or your misuse of a GEM report.
These Terms and every GEM report are governed by the laws of the country in which the report was issued. The competent courts of that country have exclusive jurisdiction over any dispute. For reports issued in Israel, the competent courts in Tel Aviv-Jaffa have exclusive jurisdiction.
GEM may update these Terms at any time. The updated version applies from its publication on this page. Continued use of our services means acceptance of the updated Terms.