Ming DynastyOf crescent shape, exquisitely carved in openwork with a xiezhi poised looking back and upwards with its menacing jaws open, gazing at a tree-top with its leaves cleverly denoted in russet, reserved against a pierced fretwork, the reverse with a lipped rim double-pierced at both ends, the stone except the leaves of translucent white tone with very minor russet inclusions, box. 5.5cm (2 1/8in) long (2).