A calcified jade double-holed ornament Neolithic period, Hongshan culture | 新石器時代 紅山文化雙聯玉璧

A larger, more rounded double disc from a tomb at the Niuheliang site, Jianping, Liaoning, is illustrated in Mou Yongkang & Yun Xizheng, eds, Zhongguo yuqi quanji [Complete series on Chinese jades], vol. 1, Shijiazhuang, 1993, pl. 5; a slightly smaller piece from the Dongwenggenshan site, Tailai, Heilongjiang, is published in Gu Fang, Zhongguo chutu yuqi quanji/The Complete Collection of Jades Unearthed in China, Beijing, 2005, vol. 2, pl. 210; for others from a Hamin site in Kezuo Middle Banner, Inner Mongolia, see https://line.17qq.com/article/gwfqhspqy.html, pp. 6 and 7; and one from the Dawenkou culture, excavated together with bi discs at Yedian, Zhouxian, Shandong province and now in the Shandong Provincial Museum, is published in Mou & Yun, op.cit., pl. 34.

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比較一例，尺寸較大而器形較圓，遼寧建平牛河梁出土，圖載於牟永抗、雲希正，《中國玉器全集》，卷1，石家莊，1993年，圖版5。黑龍江泰來東翁艮山亦出土一例，尺寸較小，載於古方，《中國出土玉器全集》，北京，2005年，卷2，圖版210。另一例出土自內蒙古科左中旗哈民遺址，參考 https://line.17qq.com/article/gwfqhspqy.html，頁6及7。再比較一大汶口文化作例，與數玉璧同出土自山東省鄒縣野店，現存山東省博物館，載於牟永抗、雲希正，出處同上，圖版34。