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WFDB Mulls Action On CVD Diamonds With GIA Reports

Responding to the report of CVD lab-grown diamonds being sold on the internet with Gemological Institute of America (GIA) natural certificates, World Federation of Diamond Bourses (WFDB) president Ernie Blom said the WFDB will discuss additional measures to fight this major threat to the industry at the forthcoming meeting of the presidents of all the affiliated member diamond bourses.

Blom reiterated the organisation’s long-standing commitment to zero-tolerance for any undisclosed or falsely identified synthetic diamond trading.

The WFDB has uploaded a list of CVD diamonds that have been inscribed with real GIA certificates to its website. Diamantaires having such stones or certificates in inventory may mostly likely possess “the real diamond” and may not need to worry, but duplicate stones with the same inscription may nevertheless be in the market.

The WFDB urges anyone who has acquired a stone with any of these numbers (either with or without a certificate) to contact GIA senior vice president Tom Moses directly (email: The WFDB was informed that there is no reason to resubmit the stone itself — unless the GIA has reason to make such request.

Blom also expresses deep appreciation of the Diamond Intelligence Briefs and to the trade press in general for their proactive investigative reporting exposing fraudulent and criminal practices which endanger the confidence of consumers in our industry.

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