Best image: T. gibbosula and C. rustica shells located in layer 4c on the cave in Morocco, which had been beads from what is now called the oldest jewelry on the planet. Resource: A. Bouzouggar, INSAP, Morocco / These are hidden by an immense passage of time and an absence https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf