Best picture: T. gibbosula and C. rustica shells present in layer 4c from the cave in Morocco, which had been beads from exactly what is now called the oldest jewelry on earth. Source: A. Bouzouggar, INSAP, Morocco / It continues to be not known about gentleman's to start with efforts https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf