19th century The first, carved as a mantis with its spindly legs aloft a leafy stem, the details finely incised, the stone an even white hue; the second a pair of ducks carved facing each other, each grasping in their beaks a floral spray, the stone cleverly worked in celadon and dark gray hue; the third carved as a crouched mantis holding a leafy stem that extends over its body, the stone a mottled white hue. 3 3/4in (9.5cm) length of first (3).