Glass
2nd-4th century CERomanGuan ware: molded dark gray stoneware with lightly crackled, light grayish blue glaze on the interior and with misfired (i.e. bubbled/cratered) light grayish blue glaze on the exterior. From the guan kilns near Hangzhou, Zhejiang province
12th-13th centuryChineseBlackened gray earthenware
3rd millennium BCEChineseTerracotta
GreekTerracotta
5th century BCEGreekTerracotta
RomanTerracotta
Unidentified cultureTerracotta
4th century BCEGreekCeramic
JapaneseTerracotta
9th-8th century BCEGreekLight gray stoneware with celadon glaze
KoreanYue ware: light gray stoneware with celadon glaze over incised and carved decoration
10th-11th centuryChinese