Top graphic: T. gibbosula and C. rustica shells located in layer 4c on the cave in Morocco, which have been beads from precisely what is now called the oldest jewelry on this planet. Supply: A. Bouzouggar, INSAP, Morocco / A number of beads made from Nassarius gibbosulus shells are considered https://getidealist.com/story20156001/5-simple-statements-about-popular-bead-materials-explained