The Platinum Diamond Quality Document | Grading
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Platinum Diamond Quality

The Platinum Diamond Quality Document

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AGS Laboratories uses a scientifically vetted cut-grading system, based on optical physics and the American Gem Society’s proprietary ray-tracing software. This three-dimensional analysis is the ultimate test for evaluating the performance of light in a diamond, which is the cornerstone of the Diamond Quality® Document (DQD) and the Platinum Diamond Quality® Document. 

The performance-based cut grade is available for Round Brilliant, Princess, Oval, Emerald and Cushion-shaped diamonds.

All the detail of the Diamond Quality® Document plus the patented computer-generated Light Performance map unique to each diamond are what make the Platinum Diamond Quality® Document the ultimate grading report.

When you are shopping, you appreciate the value of brands you know and trust. This concept is embraced by the diamond industry as well, from the retailer to the designers who create the jewelry.

For diamond companies who have developed unique and patented cut designs, the AGS Laboratories offers the opportunity to provide a specialized proprietary version of the Platinum Diamond Quality® Document, featuring the company's own logo on the face of the document.

Buy a brand you trust; and buy it with an exclusive diamond grading report from the AGS Laboratories.

Have questions or comments? Contact AGS Laboratories.



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