High Pressure (IMAGE) Johannes Gutenberg Universitaet Mainz Caption The Mainz-based researchers press the metal cell with Allen screws together to generate extremely high pressures. Only diamonds can resist the high pressure thus created in the center of the cell. The gems operate like anvils that compress a sample. Credit photo/©: Thomas Hartmann Usage Restrictions This image may only be used in connection with this press release. 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.