18th/19th century Each well carved in the form of a quail, the cover delicately incised with overlapping layers of plumage covering the bird's head and extending across its plump body, the head detailed with elongated eyes and a short curved beak, the lower portion worked as the lower body of the bird similarly decorated with plumage above a pair of claws gently tucked under the base, the stone of a pale green colour with faint russet and cloudy inclusions.11.6cm (4 1/2in) wide. (4).