About AGS Laboratories | Jewelry Association
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About AGS Laboratories

Trust Us to Protect You

When shopping for a diamond, trust the AGS Laboratories. We protect consumers by providing expert, third-party evaluation of a diamond’s quality characteristics. Our Diamond Grading reports help you to make an informed purchase when choosing a diamond. We know it’s a big investment and we want you to feel confident and secure when you buy diamonds or diamond jewelry.

Some say we are tough when it comes to diamond grading, and that is just fine by us! It means we are fulfilling our mission to protect you when you make these important purchases.

A Leader in Industry Firsts

Since our founding in 1996, the AGS Laboratories has achieved many industry firsts and accomplishments by pursuing our mission statement. Among our highlights, we:

  • Pioneered the Ideal Cut Grade for the Round Brilliant diamond. (You may also hear it called the AGS Ideal® or the Triple Zero Cut.)
  • Created the first scientifically reviewed, objective, and repeatable Cut Grade method in the industry—still the only of its kind.
  • Became the first major lab to offer diamond grading reports with a Cut Grade for fancy shapes, including Princess, Emerald, and Oval, as well as patented proprietary cuts.
  • Offer diamond grading reports that have a simple, straightforward, and intuitive scale and provide all the information you need to be comfortable in your diamond-buying decision.
  • Provide a variety of diamond grading reports, both with and without a diamond Cut Grade, to suit the specific needs of diamond manufacturers, retail jewelers, and of course, you, the consumer.

Responsible Jewellery Council Certification

AGS Laboratories was established to support the American Gem Society Mission and as a Responsible Jewellery Council (RJC) Certified firm, having committed to and been independently audited against the RJC Code of Practices—an international standard on responsible business practices for diamonds, gold and platinum group metals—fully supports the RJC Practices with regard to human rights, labor rights, environmental impact, product disclosure, grading and appraisal and other topics related to the jewelry supply chain.

Have questions or comments? Contact us!




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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

8881 W. Sahara Ave. Las Vegas, NV 89117

info@ags.org (866) 805-6500