late 19th century - early 20th century | graphite on paper
300 BCE - 300 CE | clay, slip, paint
500 BCE - 700 CE | jade
300 - 900 CE | jade
Unknown | obsidian
300 - 900 CE | clay
800 - 1200 CE | clay
1300 - 1521 CE | clay
100 BCE - 700 CE | clay
500 - 1000 CE | clay
1300 - 1521 CE | stone
300 BCE - 200 CE | clay, paint
300 BCE - 300 CE | Earthenware
300 BCE - 300 CE | clay
Unknown | jade