Altarpiece of the Church of Sant Pere (image) FECYT - Spanish Foundation for Science and Technology Share Print E-Mail Caption The altarpiece of the Church of Sant Pere contains Egyptian blue, archaeologists have found. Credit Patrimoni-UB. 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.