Concern about the marketplace of irradiated rubies!
CIBJO, AGTA and ICA issue a joint statement irradiated gems The World Jewellery Confederation ( CIBJO), the American Gem Trade Association (AGTA) and the International Colored Gemstone Association (ICA) are once again expressing concern about the presence in the marketplace of irradiated rubies and sapphires, particularly sourced in Sri Lanka. The materials in question, which have a pleasing but temporary appearance, were earlier reported upon in a 2022 press release entitled, Irradiation of Rubies: A Cautionary Note. The issue was also addressed in the 2024 pre-CIBJO Congress Special Report produced by the CIBJO Coloured Stone Commission, which drew attention to the colour stability of yellow, orange and padparadscha coloured sapphires. It noted that the issue that has become increasingly important, given that the irradiation of coloured gemstones is now widespread, and for some of these treated stones the resultant colours are not stable....