NEOLITHIC PERIOD, LONGSHAN CULTURE (CIRCA 2500-2000 BC) A VERY RARE CHINESE UNEARTHED AND UNUSUALLY LARGE JADE DISC, BI D 17.5 cm. ( 6 5/8 in.) Thickness 0.4 cm.
新石器時代 龍山文化 生坑大玉璧 直徑 17.5 cm. ( 6 5/8 in.) 厚 0.4 cm.