Chinese Neolithic Jade Bi Disc

Chinese Neolithic era jade bi disc, from the Liangzhu culture, green jade with black and amber striations, on contemporary metal stand. 11.75" diameter; on stand: 13.5" H x 11.75" W x 2.5" D.
Condition Report: Notice to bidders: The absence of a condition report does not imply that the lot is in perfect condition, additional condition information is available by request.