Liangzhu Culture, circa 3300-2250 B.C.
with slender rounded sides tapering gently to the outer rim, the smoothly polished creamy white stone with reddish brown and pale green mottling.
Diameter 3 5⁄16 inches (8.4 cm)
Compare the similar jade bracelets with more steeply rounded sides illustrated in Liangzhu wenhua yuqi (Liangzhu Culture Jades), Hong Kong, 1989, pp. 72 and 73, nos. 96 and 97.
新石器時代 良渚玉鐲 徑8.4厘米