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Certifications

There are many grading labs around the world. Each lab uses its own grading system and nomenclature. As a result, a report from one institute might show different results from a report issued by another lab for the same diamond.

The top 4 major gemological labs in the world are GIA, AGS, EGL, and IGI.

GEMOLOGICAL INSTITUTE OF AMERICA

AMERICAN GEMOLOGICAL SOCIETY

EUROPEAN GEMOLOGICAL LABORATORY

INTERNATIONAL GEMOLOGICAL INSTITUTE

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