GIA, will launch revised evaluation services

D-to-Z LGDs laboratory services until September 30 GIA, the Gemological Institute of America, will launch revised evaluation services for D-to-Z laboratory-grown diamonds on October 1. Current GIA laboratory services for D-to-Z laboratory-grown diamonds will be available until September 30. “Using descriptive terms for the quality of laboratory-grown diamonds is appropriate as most fall into a very narrow range of color and clarity,” said Pritesh Patel, GIA president and CEO. “Because of that, GIA will no longer use the nomenclature created for natural diamonds to describe what is a manufactured product.” The GIA Laboratory-Grown Diamond Quality Assessment will use descriptive terms rather than the GIA-developed nomenclature for natural diamonds. The laboratory-grown diamonds will be described as ‘Premium’ or ‘Standard’ based on an overall assessment of their clarity, color and cut. Any diamond that does not meet all the minimum crit...