Leading image: T. gibbosula and C. rustica shells located in layer 4c with the cave in Morocco, which ended up beads from what on earth is now generally known as the oldest jewelry on the globe. Resource: A. Bouzouggar, INSAP, Morocco / The intense hardness and brittleness of your materials https://chinese-jade-beads97429.mybloglicious.com/51799356/not-known-facts-about-art-deco-beaded-jewelry