A closer look at a diamond mirror (IMAGE) DOE/SLAC National Accelerator Laboratory Caption Closeup of one of the diamond crystal mirrors. It’s about one-fifth of an inch on a side. Credit Diling Zhu/SLAC National Accelerator Laboratory Usage Restrictions None License Original 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.