Leading picture: T. gibbosula and C. rustica shells present in layer 4c of your cave in Morocco, which had been beads from what's now generally known as the oldest jewelry in the world. Source: A. Bouzouggar, INSAP, Morocco / They're concealed by an huge passage of time and an absence https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf