Six chinese jade carvings 19th and 20th century

Six chinese jade carvings 19th and 20th century, comprising: a circular belt buckle carved with a dragon's head, a pebble jade snuff bottle carved as a gourd, another pebble carved with fish and lotus, a bi disc depicting the eight Trigrams and C-scrolls, a small model of a Buddhist lion dog and her puppy and a plaque carved in relief with dragons and a four character mark, 7cm max. (6)