Goryeo celadon entered an abrupt decline between the late thirteenth and fourteenth century. Sanggam celadon remained in fashion until the end of the Goryeo Dynasty, and some high-quality celadons continued to feature patterns and shapes reminiscent of the classic blue and white porcelain made in China during the Yuan Dynasty. During this period, celadons were decorated with diverse patterns, with repeatedly stamped patterns of chrysanthemum, cloud, and circle becoming particularly popular. The repetition of such patterns on the surface of pottery wares may look superficially glamorous, but they lack the clear jade color of celadon’s heyday, and look thick and crude. The main patterns include birds sitting on branches, flowers, butterflies, simple pictures of a bird in water with willows and reeds, a phoenix with a long tail flying through clouds, cranes depicted as simple dots between clouds, star-shaped peony vines, a dragon with a magic pearl, and so on. The Sanggam celadon produced at the end of the Goryeo Dynasty had a strong influence on the patterns and shapes of the Buncheong wares made in the newly founded Joseon Dynasty during the fourteenth century.