Quantum-defect diamond (IMAGE) DOE/Princeton Plasma Physics Laboratory Caption When a green laser shines on a special kind of diamond with atomic-scale defects, it can cause it to fluoresce red. This process is depicted in this photo of a quantum diamond sample as it was struck by the light of a green laser pointer, with a red light filter added to half of the sample to reveal the red fluorescence. Credit Michael Livingston / PPPL Communications Department) Usage Restrictions Credit must be given to the creator. License CC BY 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.