AGS diamond-grading system gets three patents

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AGS diamond-grading system gets three patents

May 23, 2008

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Las Vegas—The American Gem Society (AGS) has been granted three U.S. patents, the first in the organization's 74-year history.

The patents, issued by the United States Patent and Trademark Office (USPTO), are all for the AGS' Performance-Based Cut Grading System, which was developed by the AGS Laboratories cut-grade research team after years of work.

The USPTO granted the first patent, No. 7,336,347, on Feb. 26, for computer-ray tracing technology that helps determine a gemstone's light performance. This includes the AGS Performance Grading Software and Angular Spectrum Evaluation Tool (ASET).

The second patent, No. 7,355,683, was granted on April 8, for systems and methods that can determine the dispersion of a diamond relative to an observation point and thereby provide a map or other indicator of the stone's fire potential.

The USPTO granted the third patent, No. 7,372,552, on May 13, for the system and methods AGS developed to illuminate a diamond with multi-angle, color-coded light rays to determine the location from which the gem gathers light.

AGS Executive Director and Chief Executive Officer Ruth Batson said they are thrilled to receive the patents, which are an acknowledgement of the AGS' leadership in the arena of diamond cut-grade technology.

"[AGS Laboratories Executive Director] Peter Yantzer and his team of researchers have worked for several years to ensure the American Gem Society helps provide the trade with better-performing diamonds, and consumers with the confidence they're purchasing the most beautiful diamonds possible within their price point," she said.

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