Top rated picture: T. gibbosula and C. rustica shells located in layer 4c on the cave in Morocco, which had been beads from what is now often known as the oldest jewelry on this planet. Source: A. Bouzouggar, INSAP, Morocco / Many of the most common styles used in Native https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf