The global trade has embraced a homogeneous declaration of all coloured gemstone treatments, which is now incorporated into the CIBJO Coloured Stone Blue Books, said Emmanuel Piat, Vice President of the Coloured Stone Commission, who chaired the session of the body on October 4, the second day of the 2023 CIBJO Congress.

“I am amazed, because we have been fighting for the last 20 years on this subject,” Mr. Piat, said after the session, during which no objections were raised regarding the decisions taken during the pandemic.

“It might be difficult for the trade and the retailers to face this requirement,” Mr. Piat added.

Now wholesalers and jewellery retailers must declare the same way any and all treatments that have been applied to gemstones whether set or not in jewellery and offered for sale.

For example, irradiated topaz, dyed agate onyx, heated sapphire and oiled emerald must be listed as such in all the invoices.

Supporting Mr. Piat on the podium during the session was Melissa Wolfgang Amenc and Jeanette Fiedler.