Top picture: T. gibbosula and C. rustica shells located in layer 4c of the cave in Morocco, which have been beads from exactly what is now referred to as the oldest jewelry on the earth. Source: A. Bouzouggar, INSAP, Morocco / The powerful hardness and brittleness with the materials designed https://iwanttobookmark.com/story18554808/not-known-facts-about-art-deco-beaded-jewelry