Lusterware
Lusterware is a type of pottery with an overglaze finish containing metallic ingredients that give the effect of iridescence. This was popular with, and likely invented by Persian potters during the 9th century. Perhaps the highest point of the art was during the reign of the Fatimids in Egypt during the 10th-12th centuries. While the production of lusterware continued in the Middle East, spreading first to Spain and then to Italy, where it was sometimes used to enhance majolica. The technique became popular in England during the 19th century, utilized by Josiah Wedgwood and Josiah Spode in the Midlands, and at Sunderland in the North-East of England.