The CGL Laboratory

Carat Gem Lab (CGL) is an independent gemological laboratory based in France, which was founded in 2009 by Dr. Eric Erel.

The laboratory provides a full range of services for trade members, including diamonds and colored diamonds grading as well as gemstones identifications and origin determinations.

After getting his PhD, he joined in 2004 the European Gemological Laboratory (E.G.L.) located in Vancouver (Canada), and then worked at the Gubelin Gemological Laboratory in Lucerne (Switzerland) from 2006 to 2009.  

During those years, he published and co-published numerous articles in international gemological magazines and journals. Some of these articles can be downloaded on this website.

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