Eggshell

A black 'eggshell' pottery stemcup

A black 'eggshell' pottery stemcup Longshan culture, c. 2500-2000 B.C. 龍山文化 蛋殼黑陶高足盃

A black eggshell pottery stemcup and cover,

A black eggshell pottery stemcup and cover, Late Dawenkou to early Longshan culture, mid-3rd millennium B.C. 大汶口文化末至龍山文化初 蛋殼黑陶高柄蓋盃