Major impression: T. gibbosula and C. rustica shells found in layer 4c of the cave in Morocco, which had been beads from precisely what is now referred to as the oldest jewelry on the planet. Resource: 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