All certificates of authenticity

What is the French Gemmology Laboratory?

The Laboratoire français de gemmologie (LFG) is the oldest gemmology laboratory in the world. Founded in 1929 by the Chambre syndicale du diamant (Diamond Trade Association), it has been part of the Union BJOP (French Union of Jewelry, Goldsmithing, Stones and Pearls) since 2011. Its main mission is to appraise gems to inform consumers.

The Laboratoire français de gemmologie makes it a point of honor that every report it produces is based on rigorous scientific analysis. It is also the only laboratory in France to offer scientifically-based analyses for diamonds, gemstones, colored stones, and pearls. Certifications issued by the LFG are globally recognized for their reliability and security, which is why major jewelry houses, such as Cartier, Van Cleef & Arpels, Chaumet, and Boucheron, trust it to guarantee the authenticity and quality of their precious stones.

Founded and operating according to the National Expertise Charter, the LFG also complies with the recommendations of the Ministry of Higher Education and Research. This laboratory is entirely independent, thus guaranteeing the objectivity and neutrality of its appraisals.

This approach allows us to best guarantee the quality and authenticity of our stones. Although the systematic analysis of every stone or pearl is impossible due to high costs, this regular appraisal protocol constitutes a reliable control. It helps strengthen transparency with our suppliers and maintain the trust of our customers.