Prime picture: T. gibbosula and C. rustica shells located in layer 4c in the cave in Morocco, which have been beads from what exactly is now often called the oldest jewelry in the world. Resource: A. Bouzouggar, INSAP, Morocco / This could get started with using a bead typology. The https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf