Beautiful and rare Seljuk Kashan ewer , dating to c. 1037-1194AD The ewer has an ovoid form on a low foot, a straight handle and a partly compressed spout Intentional glaze crackling and discoloration to the glaze due to misfiring. Absolutely gorgeous encrusted patina. Kashan was a Persian city known for producing high-quality pottery during the medieval period. The town was well-situated, near sources of minerals needed to create their distinctive light-colored stone pastes called "frit-ware". Copper oxide was one of the raw materials used to color glazes. When copper oxide is used in a lead glaze, it turns a abundant, green color, while it becomes more turquoise in an alkaline glaze. Alkaline glazes, perhaps best known for producing the classic Egyptian turquoise color, date back thousands of years and were found in Persia, China, and Mesopotamia. Insured and fast shipping The seller of this lot hereby guarantees that this item was legally obtained. The seller guarantees that he is authorised to send this item. The seller will be responsible for organising any necessary permits. The seller will inform the buyer if this will take more than a few days.