Nano-diamonds Photo (IMAGE) University of Sydney Caption This is a photo of nano-diamonds using an optical microscope. The purpose is to characterize the size of nano-diamonds. Credit Photo by Ewa Rej, the University of Sydney 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.