Diamond anvil (IMAGE) University of Tokyo Caption The outer metal casing and inner diamond teeth of the high-pressure anvil. Credit © 2021 Hirose et al. Usage Restrictions Credit © 2021 Hirose et al. 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.