irregular: 1.6 cm (5/8 in.)
Ceramic
KoreanTerracotta
7th century BCEGreekTerracotta
GreekTerracotta
9th-8th century BCEGreekCeramic
KoreanGray earthenware
3rd millennium BCEChineseCeramic
JapaneseTerracotta
Ceramic
EgyptianTerracotta
Blackened gray earthenware
3rd millennium BCEChinese