Diamond Grading Reports | Jewelers & Consumers
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Diamond Grading Reports

AGS Laboratories offers diamond grading reports for round brilliants and fancy shapes, as well as mounted goods, brown diamonds, custom and proprietary reports. When you need third-party verification of your diamond’s quality, ask for an AGS Laboratories diamond grading report.

Platinum Diamond
Quality Document

Diamond Quality Document

Colored Diamond Document


Diamond Quality Certificate

Diamond Quality Report

Gold Diamond Quality Report

Diamond Consultation

Diamond Quality Analysis

Scintillation Report

Supported Shapes


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