Unknown | obsidian
Unknown | slate
Unknown | clay
Unknown | clay, slip
Unknown | jade
late 19th century - early 20th century | gelatin silver process
100 BCE - 700 CE | jadeite
300 BCE - 300 CE | clay, slip, paint
300 - 900 CE | clay
800 - 1200 CE | clay
100 BCE - 700 CE | stone
500 - 1000 CE | clay
500 BCE - 700 CE | clay
18th century - 19th century | metal