Qijia culture, circa 2500-1500 B.C.
Diameter 11.7 cm
The semi-translucent stone is of a brown-yellow tone with creamy white and brown areas and widely scattered 'root marks', the surface smoothly polished.
Compare the similar jade disc, Sotheby’s, on 1 June - 2 June 2017, Chinese Art, Hongkong, Lot 322.
Compare also the similar jade disc, Lark Mason Associates’ online auction, on April 18th 2017, Asian Works of Art, New York.
'Chinese Jade from the Neolithic to the Qing'
Section 7, Cong and discs