Three jade and hardstone carvings

Three jade and hardstone carvings
Late Qing dynasty
The largest a white jade belt hook with large dragon head finial facing a deeply undercut young dragon reversed by an oval button, now mounted as the handle of a blade-form letter opener; the second white jade belt slide with a stylized lotus flower carved to the rectangular face beneath a C-shaped loop at the top and reversed by an undercut rectangular belt loop; the third a butterscotch agate belt hook carved with a stylized dragon head facing backward above a swelling spatulate handle reversed by an oval button.
4 3/4in (12cm) length of white jade belt hook (3).