n.d.
10.6 x 4.4 x 2.1 cm (4 3/16 x 1 3/4 x 13/16 in.)
Plaster
19th centuryItalianSandstone with traces of pigment; from Tianlongshan Cave 3, near Taiyuan, Shanxi province
6th centuryChineseLimestone
12th centuryFrenchGrey marble
4th-3rd millennium BCEElamiteLow-grade marble from northwest Asia Minor or Propontis, with streaks of grey
4th century BCERomanLeaded bronze
1st century BCE-3rd century CERomanWhite marble
3rd-7th centuryMexicanSandstone
3rd millennium BCEEgyptianBronze
20th centuryAmericanEarthenware with green glaze
17th-19th centuryPlaster
19th centuryItalianEpsom salts in paper pouch, inscribed in red fiber-tip ink, stamped
20th centuryGerman