Jade. China, presum. Neolithic Liangzhu Culture (approx. 3300 - 2200 BC)


Medium-sized bi disc, carved out of a highly altered green and russet coloured jade; the central hole, drilled from both sides, was left unpolished with a small ridge in the middle.
The surface of the disc is mottled and almost entirely covered with a white patina due to alteration of the stone. The effect is somehow similar to that observed on the disc Lot AK616-101, though here the patina is shinier, virtually hiding the original green and russet colour of the jade which can be seen on the border of the disc that was not affected by the alteration.
A Liangzhu culture bi disc of a somewhat similar colour from the Arthur M. Sackler collection has been auctioned at Christie’s New York (Sale 2268, 18 March 2009, Lot 284,
http://www.christies.com/lotfinder/lot/a-very-rare-opaque-taupe-and-russet-5181920-details.aspx?pos=4&intObjectID=5181920&sid=&page=9&lid=1.
玉壁。中國，約新石器時代，良渚文化（約公元前3300至2200年）。直徑23厘米，內直徑4.6厘米，厚7至10厘米。

DM 23 CM, INNER DM 4,6 CM, THICKNESS 7 TO 10 MM
From a German collection



Jades nos. 92 - 121 were examined by Univ. Prof. Filippo Salviati, declared to be authentic and dated by critical evaluation of their origin.
Salviati is a professor of Chinese art at the oriental faculty of the university „La Sapienza“ in Rome and one of the most renowned experts in the field of jades worldwide, specialized in archaic jades of all eras up to the Song dynasty. All images of jades on our website can be enlarged to high detail. Work by hand, signs of age, weathering and colour can be recognized in these images.
奧匈帝國舊藏。古玉由意大利 Filippo Salviati 教授鑑定。Salviati 教授是羅馬大學中國美術專家，世界上最出名的雕玉藝術專家之一。他的專業是商代一直到宋代的古玉。我會網上的古玉都可以方大，看的到最微小的細節，正如手工，年代，顏色等。