This is one I've been working on for a long time. The inspiration comes from the amber room in Russia which is covered entirely in amber and gold. The hardest part was figuring how to get the raw amber into a tube, but after many attempts was successful. The clip is patterned after one of the designs on the wall. I also incorporated my first side button filler which when depressed will compress the internal sac for loading ink. A locking mechanism prevents accidental depression. Little did I know before making it, but this design is quite similar to the Jaxon "Stud Filler" associated with Conklin in the early 1900s.