Neolithic period, circa 3000-2000 B.C.
Diameter 13.3 cm
The smooth disc with central aperture drilled from one side, the semi-translucent stone of greenish-white color.
Compare the similar jade disc, attributed late Neolithic, The British Museum, London, (registration number 1909,0506.7)
Appraised by Mr. Bernstein, an internationally recognized specialist dealer in Chinese antiquities.
References:
Jessica Rawson
'Chinese Jade from the Neolithic to the Qing'
London, 1995.
Section 7, Cong and discs