Horst Marschall (IMAGE) Goethe University Frankfurt Caption Professor Horst Marschall in front of one of the high-pressure belt apparatus in the Institute for Geosciences used to simulate the formation of inclusions in diamonds- Credit Horst Marschall 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.