AGS Cut Grading Patent

The American Gem Society (AGS) has acquired an additional patent recognizing its Performance-Based Cut Grading System. This is the fourth patent for the system granted this year, covering “methods for grading gemstones, apparatus for grading gemstones and systems that utilize such methods and apparatus,” according to the scientific abstract.

The United States Patent and Trademark Office granted patent number 7,382,445, for work developed by AGS Laboratories Executive Director Peter Yantzer and a research team.

The three earlier patents recognize computer ray tracing technology for determining a loose diamond’s light performance; systems and methods that can be used to determine the dispersion of a diamond relative to an observation point and methods that illuminate a diamond with multi-angle, color-coded light rays to determine the location from which the gem gathers light.

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