Celadon porcelain dish, China, Longquan kilns, Ming period, 15th - 16th century The olive-green cover is decorated in the center with a radiating motif inscribed in squares molded under the cover. The inside of the rim is slightly gadrooned. The base features an unglazed red cookie ring. Diameter: 32.5 cm The red color of the cookie, due to iron oxides appearing during firing, is characteristic of celadon from the Longquan kilns of the early Ming period.