Prime picture: T. gibbosula and C. rustica shells located in layer 4c on the cave in Morocco, which had been beads from what exactly is now known as the oldest jewelry in the world. Source: A. Bouzouggar, INSAP, Morocco / The shell beads also give insights into technological features including https://titushhfda.blogolenta.com/27962344/about-greek-bead-symbolism