False Color Map (IMAGE) Proceedings of the National Academy of Sciences Caption False color map from Raman spectroscopy showing diamonds (red) and graphite (blue) in a ureilite. Credit Image credit: Ryan S. Jakubek 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.