irregular: 3 cm (1 3/16 in.)
Ceramic
KoreanCeramic
ChineseCeramic
KoreanTerracotta
Terracotta
RomanCeramic
KoreanGuan ware: molded dark gray stoneware with misfired, or degraded, light grayish blue glaze. From the guan kilns near Hangzhou, Zhejiang province
12th-13th centuryChineseTerracotta
Terracotta