Major impression: T. gibbosula and C. rustica shells found in layer 4c with the cave in Morocco, which have been beads from precisely what is now generally known as the oldest jewelry on this planet. Supply: A. Bouzouggar, INSAP, Morocco / The shell beads also deliver insights into technological aspects https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf