A joint statement was issued by The Diamond Dealers Club (DDC) of New York and the Diamond Manufacturers & Importers Association of America (DMIA) yesterday with regards to the alert issued by  Gemological Institute of America (GIA) about  approximately 500 colourless to near-colourless diamonds that were potentially subjected to an undisclosed, temporary treatment, which masks the inherent colour of the diamond and can lead to a higher grade.

The joint statement said:

“The Diamond Dealers Club of New York and the Diamond Manufacturers & Importers Association of America stand united in strong condemnation of the use of undisclosed treatments. The DDC and the DMIA support the highest ethical standards. Disciplinary action will be taken if any member fails to follow DDC and DMIA rules and regulations regarding proper disclosure. The DDC and the DMIA remind their members that all treatments must be clearly written and disclosed on all memos and invoices. We take comfort in knowing that the GIA is able to detect these new treatments and we will assist them anyway we can.”