Debbie Azar is president and co-founder of Gemological Science International (GSI)
(idexonline.com) - Last May, I wrote a Memo about the need for full disclosure on grading reports issues by gemological laboratories when it comes to post-growth treatments of laboratory-grown diamonds. That has not changed. What is changing is an emerging pattern of "undisclosed" natural diamonds being mixed with laboratory-grown diamonds in jewelry. It is a new and different conversation to have around disclosures, testing and ethics.
