GIA Changes Lab-Grown Diamond Grading Service: What to Know

Posted on September 3, 2025 by Brecken Branstrator, GIA GG

GIA’s new lab-grown diamond grading services officially begin Oct. 1. The previous system of grading lab-grown diamonds used the same nomenclature as for natural diamonds on a digital-only report. After Sept. 30, GIA’s new Laboratory-Grown Diamond…

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