Light and Manganese to Discover the Source of Submerged Roman Marble (image) FECYT - Spanish Foundation for Science and Technology Share Print E-Mail Caption Scientists take the plunge underwater to analyze one of the most valuable elements from the affluent Roman villas: white marble. Credit Michela Ricca et al. Usage Restrictions None 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.