Most of the axons in the central nervous system are wrapped in myelin, a substance rich in lipids (fatty substances) and proteins. Like the coating around an electrical wire, myelin insulates and protects the axon and helps speed nerve transmission.
Potato/Semi Round Pearls. Potato pearls are some of the less expensive freshwater pearls to be found on the market, but their look is anything but cheap. You can purchase potato pearls in every color of the rainbow, and craft beautiful one of a kind creations for gifts and your own collection.
The Paspaley Pearl, which is perhaps the most perfect pearl ever created by human intervention, gets its name from the Company, Paspaley Pearl Pty Ltd. who were responsible for culturing the pearl inside the pearl oyster Pinctada maxima, in one of their pearl farms off the coast of northern Australia in the year 2002.