All you need to know about the certificate of the French Gemmology Laboratory

The French Gemmology Laboratory (LFG) is the oldest gemmology laboratory in the world and the only French laboratory to offer gem and diamond analyses based on scientific analyses. Founded in 1929, the LFG is today internationally recognized as one of the most reliable gemmology laboratories. Discover the characteristics of the analysis reports issued by the LFG.

Reliable and secure certificates

The French Gemmology Laboratory offers several services to its clients. It can identify gems and diamonds, issue a certificate of authenticity for these stones, and detect fake stones and imitations. It also produces analysis reports for diamonds, pearls, colored pearls, and other gems, with grading based on the 4Cs as do other international gemmology laboratories (GIA, HRD).

The LFG produces nearly 5,000 analysis reports per year. These reports are considered reliable worldwide for several reasons. First, the analysis of the diamond or gem is carried out by several gemmologists who do not know the client's name (a number is assigned to each diamond at the start of the analysis) and do not know the analysis of other gemmologists. This ensures objectivity and impartiality. In addition, the LFG, as the oldest gemmology laboratory in France, has an exceptional gemmological library and cutting-edge equipment, allowing it to produce fine, precise, and detailed analyses.

The LFG's diamond certification process has obtained two certifications: ISO 9001 certification and ethical, social, and environmental certification from the RJC (Responsible Jewellery Council).

Reliable and secure certificates

The LFG offers comprehensive analysis reports for your diamonds from 1 carat. These reports include not only the 4Cs (cut, color, clarity, and carat weight) based on the grading established by the American gemmology laboratory GIA, but also much more. You will also find in the LFG analysis report information such as diamond type, shape, dimensions, and fluorescence. A diamond plot with inclusions and a proportion diagram are also included to complete the report.

Below 1 carat, the LFG will provide an identification report for your diamond, with the same information as above, except for the inclusion diagram.

How is an analysis report established by the French Gemmology Laboratory?

The LFG certification process follows a very precise protocol determined by an institutional charter based on the National Charter of Expertise. When the diamond arrives at the laboratory, it is first registered in the administrative department and weighed once for identification, then assigned a number. The diamond is then transferred to the laboratory, where it is officially weighed before undergoing various advanced tests. It is photographed, scanned in 3D, observed under a microscope, and photographed under a microscope. These various tests allow it to be identified, to determine whether it is natural or synthetic, and to provide a diamond grade to establish the analysis report. The diamond thus passes through the hands of several expert gemmologists to ensure the reliability of the analysis.

This is how the analysis certificate is produced, which will allow you, among other things, to insure or resell your diamond!
We invite you to consult the other gemmology laboratories in France in this article.
You can also have a diamond appraised for free without an appointment at 43 Rue Beaubourg, 75003 Paris.

Our customer service is freely at your disposal for the valuation of your jewelry. What is the French Gemmology Laboratory (LFG)?

The LFG, created in 1929, is the oldest gemmology laboratory in the world and the only French laboratory specialized in scientific analyses of gems and diamonds. It is internationally recognized for its reliability.

What services does the LFG offer?

The LFG offers identification of gems and diamonds, issuance of authenticity reports, detection of fake stones and imitations, and production of analysis reports for diamonds, pearls, and other gems.

How does the LFG guarantee the objectivity and impartiality of its analyses?

The analyses are carried out by several gemmologists who do not know the client's name or the analyses of other experts. Each diamond is assigned a unique number to ensure anonymity and objectivity.

What certifications has the LFG obtained?

The LFG has received ISO 9001 certification and ethical, social, and environmental certification from the Responsible Jewellery Council (RJC).

How can I get a free appraisal of my jewelry at Diamantaire Paris?

You can have your jewelry appraised for free without an appointment at 43 Rue Beaubourg, 75003 Paris. The customer service of Diamantaire Paris is available for the valuation of your jewelry.

In the heart of the capital of high jewelry, Diamantaire Paris stands out for its unparalleled expertise in the valuation and sale of certified diamonds, especially those accompanied by a certificate from the French Gemmology Laboratory. Our reputation is based on in-depth knowledge of the market and a precise understanding of the criteria that define a diamond's value, including clarity, color, weight, and shape.

For those looking to sell a bracelet set with diamonds or any other piece of high jewelry, our team offers a transparent and accurate valuation, ensuring that each piece is sold at its true value. We understand the importance of every purchase or sale decision, which is why we also offer advice for those seeking to buy a Van Cleef & Arpels parure or to understand which diamond to choose when purchasing a diamond.

Our commitment to excellence is reflected in our customer service. For any questions or requests, we invite you to contact us. Our team is dedicated to providing a personalized experience and will answer all your inquiries, whether for a free jewelry valuation or to discuss selling options.

Diamantaire Paris is more than a jewelry store; it is a trusted partner for all your diamond and high jewelry needs. Visit our jewelry store in Paris to discover our exquisite collection or to benefit from our appraisal services. Whether you are looking to sell, buy, or simply explore the fascinating world of diamonds, we are here to guide you every step of the way.