NEOLITHIC PERIOD, QIJIA CULTURE (CIRCA 2100-1600 BC) A CHINESE WHITE AND RUSSET JADE DISC, YUAN D 9.8 cm. (3 7/8 in.) Thickness 0.6 cm.
新石器時代 齊家文化 白玉帶沁玉瑗 直徑 9.8 cm. (3 7/8 in.) 厚 0.6 cm.