This heavily potted, stoneware dish has a wide rim and is decorated with various abstract and floral incised designs, covered with a bluish-green glaze.Celadon is a French term taken from the character of a shepherd in a 17th century play, who wore a green costume. The term refers to green-glazed wares, where naturally occurring iron oxide reacts to the lack of oxygen during firing in the glaze by turning green. Green-glazed wares in Thailand were probably introduced from China during the early 14th century.The royal cities of Sukhothai and Si Satchanalai in north-central Thailand were at the heart of one of the largest ceramic-producing centres in Southeast Asia during the 14th century.