Natural Diamonds: An Intruder in the Laboratory-Grown Supply Chain January 14, 21 by Debbie Azar
Debbie Azar is president a
nd co-founder of Gemological Science International (GSI)
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 a
nd different conversation to have around disclosures, testing and ethics.
All laboratory-grown diamonds submitted to us for certification go through a specific, controlled process. In the past several months during our routine grading of laboratory-grown diamond jewelry, our team of experts have come across natural diamond melee mixed into lab-grown diamond jewelry on numerous occasions. Laboratory-grown diamond jewelry with undisclosed natural diam