Of square form,surmounted by a ferocious dragon powerfully worked in meticulous precision with bulging eyes and flaring nostrils above long curling whiskers,the scales and flowing mane finely incised with its long tail coiled at the rear,the seal face deeply and crisply worked with the characters reading Guxi Tianzi Zhibao,,the translucent stone of an even milky-white tone with an unctous glossy finish.