Gemological Institute of America will change how it describes lab-grown diamonds. It will use descriptive terms instead of the usual color and clarity grades. This change aims to provide more ...

Until the GIA finalizes the revised description system for lab-grown diamonds, it will continue to provide its current services for synthetics, the organization said. The institute will release its ...

CARLSBAD, Calif. – June 2, 2025 – Beginning later this year, GIA (the Gemological Institute of America) will start using descriptive terms to characterize the quality of laboratory-grown diamonds and ...