Prime picture: T. gibbosula and C. rustica shells found in layer 4c with the cave in Morocco, which have been beads from what's now often called the oldest jewelry on the earth. Source: A. Bouzouggar, INSAP, Morocco / Upgrading to your premium membership provides entry to all our articles or https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf