late 19th century - early 20th century | gelatin silver process
300 BCE - 300 CE | clay, burnished red slip
300 BCE - 300 CE | clay, slip, paint
300 - 900 CE | jadeite
early 1900s | stone
Unknown | obsidian
100 BCE - 700 CE | stone
300 - 900 CE | clay
1300 - 1521 CE | clay
500 - 1000 CE | clay
early 20th century | clay, slip, paint
300 BCE - 300 CE | clay
500 BCE - 700 CE | clay
Unknown | jadeite