Rock crystal
18th-19th centuryChineseExport blue-and-white ware: porcelain with decoration painted in underglaze cobalt blue
18th centuryChineseLight reddish-brown, slightly micaceous terracotta with brownish-black painted decoration
6th century BCEGreekFritware, black painted under turquoise glaze (some modern over paint inside)
12th-13th centurySyrianBrass
16th centuryGermanSteel with gold overlay
19th centuryPersianTerracotta
Gray stoneware
5th-3rd century BCEChineseBlack basalt
18th centuryBritishCeramic
19th centuryRussianEarthenware with three-color (sancai) lead glaze
17th-20th centuryChinese