Best image: T. gibbosula and C. rustica shells found in layer 4c with the cave in Morocco, which were beads from precisely what is now often called the oldest jewelry on the planet. Source: A. Bouzouggar, INSAP, Morocco / They are hidden by an enormous passage of your time and https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf