Concerns have emerged in 2025 regarding irradiated sapphires and rubies from Sri Lanka exhibiting colour instability.
These gemstones, particularly yellow, peach, and Padparadscha sapphires, as well as some rubies, have been reported to fade or change colour over time, raising issues about treatment disclosure and consumer trust.
While there is no evidence they are unsafe, these stones are bypassing regulations designed to ensure gemstones are safe for consumer use. After irradiation, gemstones are typically stored for a period to allow any residual radioactivity to decay to safe levels before being released into the market. Regulatory bodies, such as the International Atomic Energy Agency in the UK and the U.S. Nuclear Regulatory Commission (NRC), oversee the safety of irradiated gemstones, ensuring they pose no health risks to consumers.
Industry Response
Three major jewellery and gemstone trade organisations are calling for stronger action against these Sri Lankan irradiated gems, particularly rubies and fancy sapphires, that are being sold in the market. According to The World Jewellery Confederation (CIBJO), the American Gem Trade Association (AGTA), and the International Coloured Gemstone Association (ICA), a significant number of these gemstones are reportedly unstable, with colours fading to almost white or light pink, or becoming dark red in the case of rubies.
The Sri Lankan Gem and Jewellery Association (SLGJA) has stated that measures are being taken to combat the problem, including an industry-wide awareness campaign and plans to introduce stricter regulations and penalties for non-disclosure of treatments, as noted by CIBJO.