Top image: T. gibbosula and C. rustica shells found in layer 4c from the cave in Morocco, which had been beads from precisely what is now generally known as the oldest jewelry on the globe. Resource: A. Bouzouggar, INSAP, Morocco / The intense hardness and brittleness on the materials made https://friendlybookmark.com/story18356331/helping-the-others-realize-the-advantages-of-history-of-beads