What is the American Gem Society?


AGS Laboratories developed the AGS Performance-Based Cut Grading System.

The key to the system is tracing light as it travels through the diamond. That's what determines whether a diamond looks bright and lively or dull and mediocre.

The lab offers several levels of grading reports. The most popular is the Diamond Quality® Document. It shows cut (if available), color, clarity and carat weight accompanied by a profile showing that individual diamond's measurements, along with a custom plot for the actual facet arrangement and inscription details.

Learn more about some of the most well-known diamond grading laboratories HERE »

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