GIA to Add 4Cs Color and Clarity Grades for Lab-Grown Diamonds
The Gemological Institute of America (GIA) is adding 4Cs color and clarity grades for laboratory-grown diamonds (LGDs), replacing the existing descriptive terms and grade ranges on their reports, Rough & Polished reports.
The new service, to be launched in Q4 of 2020, will include “4Cs assessment, plotted clarity diagram and proportions diagram for stones from 0.15 cts and 4Cs assessment and proportions diagram for stones from 0.15 cts up to 1.99 cts”. The report will also include the specific color and clarity grade. All LGDs will be laser-inscribed with the GIA report number and the words “laboratory-grown”.
Susan Jacques, GIA president and CEO said: “[…]. Ensuring consumers’ trust with GIA’s reliable, independent and authoritative grading reports for all diamonds benefits the public and the entire gem and jewelry industry”.