Eastern Zhou Dynasty, 4th-3rd Century B.C.
finely carved in relief on both sides with tiny comma-spiral shape ‘sprouting grain’ between narrow wedge-shape borders, the surface polished to a high gloss, the olive green translucent stone with dark brown mottling, with encrusted remains of cinnabar and earth from burial.
Diameter 2 5⁄8 inches (6.7 cm)
東周 玉環 徑6.7厘米