Gold Diamond Quality Report
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Quick Facts about this Report

  • Used specifically for evaluating the Round Brilliant diamond cut
  • Combines two technologies to provide a proportion-based report
  • Accommodates those in the trade who prefer a proportion-based report

Gold Diamond Quality Report

Why It’s Great

Our scientifically vetted cut-grading system continues to receive great reviews for its accuracy and consistency. Many in the industry, however, still prefer to use proportion-based grading for specifically evaluating the Round Brilliant diamond cut.

Proportion is based on the following factors: Table Size, Crown Angle, Girdle Thickness, Pavilion Angle and Culet Size. (Learn more about these terms in our Glossary). Proportion has to do with the size and angular relationships between each of these points and contribute to the overall quality of the cut.

While our 3D technology allows us evaluate cut on new and even more detailed levels, we needed a way to accommodate our newer technology with this proportion-based preference. The AGS Laboratories Gold Diamond Quality® Report adapts the cut-grade technology from a three-dimensional system to a two-dimensional system.

We present this report in a plastic sleeve with a front pocket, which contains a card with the diamond’s basic information, which makes it easy for the jeweler to find the right diamond. It’s all a part of our commitment to ethical, safe jewelry buying for you, the consumer.

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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