Certificate of Authenticity Lapis Lazuli

What is the French Gemmology Laboratory?

The Laboratoire français de gemmologie (LFG) is the oldest gemmological laboratory in the world. Founded in 1929 by the Diamond Trade Association, it has been affiliated with the Union BJOP (French Union of Jewellery, Gold and Silverware, Stones and Pearls) since 2011. Its main mission is to appraise gemstones to inform consumers.

The French Gemmology Laboratory prides itself on ensuring that every report it produces is based on a rigorous scientific analysis. It is, in fact, the only laboratory in France to offer scientifically based analyses for diamonds, gemstones, coloured stones, and pearls. Certifications issued by the LFG are globally recognised for their reliability and security, which is why major jewellery 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 Charter for Expertise, the LFG also complies with the recommendations of the Ministry of Higher Education and Research. This laboratory is completely independent, thereby guaranteeing the objectivity and neutrality of its appraisals.

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