Diamond Trade Info | Jewelery
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Diamond Trade Info

A trusted name in diamond grading...and so much more.

Founded to support the American Gem Society (AGS) mission, AGS Laboratories is a nonprofit diamond grading laboratory dedicated to consumer protection. As a result, jewelry buyers have come to know the AGS Laboratories as the most trusted name in diamond grading. Members of the jewelry and diamond industry, like you, know us as the leader in grading reports that provide consistency and accuracy based on science.

Over the years, we’ve grown into a full-service diamond grading laboratory, offering reports for round brilliant and fancy shapes, as well as mounted goods, custom and proprietary reports, laser inscription, natural diamond verification, diamond sorting and online solutions.

Your customers look for the name. You look for the premier, full-service, diamond grading laboratory in the industry. Together, AGS Laboratories makes the grade—in every sense of the term.


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AGS Research and Documents


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AGS Laboratories

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Mission Statement

The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.

The Society is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.

AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.

American Gem Society