Tiny Sea Sapphires' Iridescence (IMAGE) Weizmann Institute of Science Caption Tiny sea sapphires' iridescence, created by a regular array of thin transparent crystal plates, is also the secret of their "disappearance." Credit Weizmann Institute of Science Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.