Fang Jiekan carved, field-yellow stone benevolent button sealSpecification: high 6.8 cm diameter 2.9 cm weighs 123 gThis collection take excellent field-yellow stone, stone stone, colour and lustre Huang Run, relief benevolent button, the norm of the facial features, intaglio poetry writing norm, bottom seals neatly, knife method, with a fine leather patina of primitive simplicity.