Finally I have something ready and completed! I was bit skeptical about making anything complex from Fimo, but everything went better than expected. I had few problems on the way. Mostly they were sculpting issues with strange shapes and how to achieve them; from solid chunks or by cutting them with patterns from a sheet of clay.
Next to latex molds I used Fimo itself to make molds for the little trinkets for the amulet and earrings. I baked the molds and let them cool. I used talc as release agent. I took a small piece of Fimo and push it in the mold. With right amount of talc the clay popped out almost by itself. After baking I trimmed the pieces with a exacto knife.
Left: coins with stain
I used jewelry hooks to attach the trinkets. I secured them with epoxy glue which I also used to glue on the red stones. I drilled tiny holes for the coins and used stitching thread to hang them from the amulet.