The choice of N. gibbosulus in Mediterranean internet sites and N. kraussianus is South African internet sites can be a purpose in their availability from the vicinity of the internet sites, but won't demonstrate why this genus was desired in excess of other shells of comparable size and shape. A https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf