The shell is ovate and ventricose. The body whorl is variously sculptured. The aperture is ovate, with a short mirrored truncated anterior canal. The intense hardness and brittleness of the materials produced it not possible to put on, grind, and bore the shell by machinery alone. Initial the thin parts https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf