Best picture: T. gibbosula and C. rustica shells present in layer 4c in the cave in Morocco, which have been beads from what is now often called the oldest jewelry on this planet. Resource: A. Bouzouggar, INSAP, Morocco / The shell beads also offer insights into technological features which includes https://chinesejadebeads09641.is-blog.com/37447916/bead-stringing-things-to-know-before-you-buy