Best image: T. gibbosula and C. rustica shells present in layer 4c from the cave in Morocco, which were being beads from what on earth is now called the oldest jewelry on the planet. Resource: A. Bouzouggar, INSAP, Morocco / Among the list of most significant aspects of Native American https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf