The ammonites are art beads made from polymer clay (some of mine ^^) combined with the beaded beads (yes, I like how that sounds, childish as that this might be!) made by Rebecca. I got them as well as the daggers as part of her curiosity kit (beads from "Jacaranda" and the daggers from "Whispers" - all the kits have names!).
It seems that I always make batches of beads (could also be due to the fact that I am easily bored with repetitions...). Have a look here at the other polymer clay beads I made along with these ammonites. :)