The choice of N. gibbosulus in Mediterranean internet sites and N. kraussianus is South African web-sites is usually a functionality in their availability in the vicinity from the internet sites, but would not clarify why this genus was most well-liked about other shells of comparable sizing and condition. A comparison https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf