Prime graphic: T. gibbosula and C. rustica shells found in layer 4c on the cave in Morocco, which were being beads from what's now generally known as the oldest jewelry in the world. Source: A. Bouzouggar, INSAP, Morocco / The extreme hardness and brittleness on the materials built it not https://eduardomkiea.wssblogs.com/31111408/getting-my-indian-agate-beads-to-work