Top rated picture: T. gibbosula and C. rustica shells located in layer 4c from the cave in Morocco, which have been beads from exactly what is now often called the oldest jewelry on the earth. Supply: A. Bouzouggar, INSAP, Morocco / Karen Loise van Niekerk does not do the job https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf