Of square section,surmounted by a well carved crouching dragon in openwork,the mythical beast rendered with finely incised beard and mane,bulging eyes and powerful claws, depicted standing foursquare with an arched back forming with a long tail curling upwards along the spine,the square seal face crisply carved in archaistic script with “Huangdi Zhixi”, the lustrous semi-translucent stone of an even white colour.