SGL Labs is a diamond certification and authentication laboratory co-headquartered in London and New York.

We are one of the fastest-growing international diamond laboratory spanning 5 countries & 17 locations.

Prioritizing high standards, SGL is backed up with state-of-the-art technology and skilled professionals. Innovations such as personalized reports, QR codes, virtual blockchain-enabled certificates, and education services help us benchmark SGL’s presence as one of the leading gemological laboratories around the world. 

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