Earthenware Dish Painted Blue with Splashes of Green and Yellow 830-900 Iraq, Basra, Abbasid period, 9th Century Earthenware with overglaze-painted design Diameter: 30.2 cm (11 7/8 in.); Overall: 1.3 cm (1/2 in.) The Worcester R. Warner Collection 1915.304 DESCRIPTION This dish displays two great technological advances of the ninth century: the invention of opaque white glaze (imitating Chinese porcelain) and painting in colbalt blue. PROVENANCE ?-1915 (Dikran G. Kelekian [1867-1951], New York, NY, sold to the Cleveland Museum of Art) 1915- The Cleveland Museum of Art, Cleveland, OH