Jade Disc bi
A jade bi-disc of circular form and uneven thickness. Its central, circular aperture is cut from both sides, leaving a ridge in the centre and visible grinding lines to either side of it. The stone is of predominantly dark green and red tones with strong all-over white veining. The disc is completely unadorned and the surface is well polished on both sides.
Plain, undecorated jade bi discs of large size appear to have been a specialty of jade craftsmen of the Liangzhu culture. The earliest bi discs found during the late Neolithic period are from burial sites around the East coast of China. A closely comparable jade bi disc, the stone of similar dark green tone and whitish veins, was unearthed from a Liangzhu culture site at Yuhang city in 1982, and is now in the collection of the Liangzhu Culture Museum. Another similar bi disc of overall greenish tones is in the collection of the National Palace Museum in Taipei.
- Watson, W. The Arts of China to AD 900, Yale University Press, 1995, p. 52
- Jades of the Liangzhu Culture- The Dawn of Chinese Civilization, the Liangzhu Culture Museum and the Art Museum, The Chinese University of Hong Kong, Hong Kong, 1998, no. 17, pp. 37, 85
- A Catalogue of the National Palace Museum’s Special Exhibition of Circular Jade, Taipei, 1995, no. 48, pp. 88-9