NEOLITHIC PERIOD, LONGSHAN CULTURE (CIRCA 2500-2000 BC) A CHINESE WHITE AND RUSSET JADE DISC, YUAN D 11.1 cm. (4 3/8 in.) Thickness 0.6 cm.
新石器時代 龍山文化 白玉帶沁玉瑗 直徑 11.1 cm. (4 3/8 in.) 厚 0.6 cm.