Description: Jade. China, Late Neolithic period, early Bronze age, c.2500-2000 BC Small disc in light green and semi-translucent jade with a large reddish area near the border. The jade is actually a very pleasant visual mix of different shades of green and brown, determined by the inclusions and by the natural process of alteration of the stone, in progress in the areas marked by the white and cloudy patches. In a portion near the edge, the iron contained in the jade surfaces and oxidizes, creating blood-coloured veins and red spots. The disc has a distinctive lens-shaped cross-section: the jade around the central hole slopes gently towards the perforation and the border is thinner than the body of the disc. Similar small discs of this type have been found mostly in sites of the late Neolithic Dawenkou culture, often as part of ornaments composed of various elements in jade, such as the one discovered in 1971 at Yedian, Zoucheng City, Shandong Province, which also included jades shaped as the double disc pendant described below. For a colour plate of the ornament from Yedian, see Mou Yongkang牟永抗, Zhongguo yuqi quanji - 1 Yuanshi shehui 中国玉器全集-1:原始社会 (Chinese Jades: Vol.1, Early Societies), Shijiazhuang 1993, no.34. Compare a disc of similar size and shape from Gallery Zacke, number AK1114-052: http://www.zacke.at/en/item/16200/disc 玉璧 - 新石器時代晚期, 青铜器時代早期, 公元前2500-2000 直径 7.8 厘米; 孔径 2.1 厘米 DIAMETER 7.8 CM - HOLE 2.1 CM From an Italian collection
Notes: All jades in this catalogue will soon be published in the forthcoming jade book by FILIPPO SALVIATI: "THE MYSTERIOUS STONE - Archaic and Antique Chinese Jades from Neolithic to Han from Private Collections".
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Professor Salviati teaches Chinese Art at the University "La Sapienza" in Rome, Faculty of Oriental Studies, and is one of the world's most recognized jade experts, specialized in archaic jades until the Song Dynasty. Hi-resolution pictures of all jades are to be found in our web-site, and can be enlarged so that handwork, age-related traces of weathering, as well as colors are very well recognizable.