Roman Glass (image) Aarhus University Share Print E-Mail Caption One of the colourless Roman glass sherds from Jerash, Jordan, analysed in this study. Purple splashes are iridescence due to weathering. Credit Danish-German Jerash Northwest Quarter Project. Usage Restrictions May only be used with appropriate caption and credit 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.