Ring, China, Warring States Period (approx. 480-221 BCE). Nephrite. Diam. 1 7/16 in x D. 1/8 in, Diam. 3.65 cm x D. .32 cm. The Avery Brundage Collection, B60J569 © 2017 Asian Art Museum Chong-Moon Lee Center for Asian Art and Culture.