SGL is the #1 International Gemmological Laboratory
in the United Kingdom to specialise in certifying diamonds and diamond studded jewellery and to offer Mobile laboratory services all over the country. SGL certifies each diamond with thorough detail supported by the latest technology and vast gemmological expertise of a highly qualified team.
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What Customers Say
SGL helped me understand the contents of a diamond certificate with the basic 4Cs of a diamond which increased my product awareness. I am confident now and definitely know more about a diamond and it’s certification then I knew before.
Buying an SGL certified diamond inspired confidence in me and helped me verify that I am buying a product that gives me a bang for the buck.
The SGL Diamond Jewellery Report explains the characteristics of jewellery and the stones contained in it in an eye pleasing format. It complements the jewellery I have bought it with.