A Blue-Painted Pot (IMAGE) Washington University in St. Louis Caption Pottery decorated in a distinctive pale blue color was in vogue in New Kingdom Egypt, particularly during the reigns of Amenhotep III and Ramesses II. The pale blue is due to cobalt that may have been derived from a mineral mined at an oasis in the eastern Saharan desert. Credit Colin A. Hope/Monash University Usage Restrictions Please credit to Colin A. Hope 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.