Liangzhu Culture, circa 3300-2250 B.C.
with square-angled flat sides and wide circular aperture, the surface smoothly polished all over, the cloudy buff-colored stone with green and brown mottling.
Diameter 2 15⁄16 inches (7.5 cm)
Compare the similar jade bracelet unearthed from M6 at the Liangzhu site in Yaoshan, Yuhang district, Hangzhou, Zhejiang province, illustrated in Yao kun meiyu: Liangzhu bowuyuan cang Liangzhu wenhua yuqi jingcui (Beautiful Jade: Selected Liangzhu Jades from the Collection of the Liangzhu Museum), Beijing, 2011, p. 236, no. 113.
新石器時代 良渚玉鐲 徑7.5厘米