DGL
Diamond Certificates
DGL
Diamond Certificates
DGL
Diamond Certificates
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Welcome!

The Delaware Gemological Laboratory is one of the independent diamond grading and certification laboratories, providing independent and guaranteed diamond grading certificates, or diamond grading reports, for natural diamonds.

Over more than 13 years, independent DGL Laboratory has gained the diamond industry’s confidence by offering high-quality solutions, a highly reputable lab, as well as massive in-house expertise and experience.

DGL Laboratory offers a wide range of services and equipment geared for the use of diamond and jewellery professionals as well as for the diamond and jewellery buying public. These are provided by its various divisions:

Diamond Lab is charged with confirming the authenticity of diamonds, and describing their quality characteristics. It issues one of the world’s most respected diamond certificates.

Research consists of a team of scientists, engineers and laboratory staff who carry out fundamental and applied research for the diamond industry, as well as provide specialised services to the sector.