Major graphic: T. gibbosula and C. rustica shells located in layer 4c of your cave in Morocco, which were being beads from what is now referred to as the oldest jewelry on earth. Source: A. Bouzouggar, INSAP, Morocco / This paper reconsiders glass beads which have hitherto been considered early https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf