Diamond Grains from Canyon Diablo Meteorite (image) Arizona State University Share Print E-Mail Caption Diamond grains from the Canyon Diablo meteorite are shown. The tick marks are spaced one-fifth of a millimeter (200 microns) apart. Credit Arizona State University/Laurence Garvie Usage Restrictions No restriction when used in connection with reportage on this release. Share Print E-Mail 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.