Irradiated (treated) diamonds
Diamants traités (dits aussi « irradiés » ou « bombardés ») | 処理ダイヤモンド/ショリダイヤモンド | 辐照处理钻石
Irradiated (treated) diamonds
Diamonds that have been exposed to radiation in order to change their colour from yellowish to fancy yellow or blue. The change is permanent.