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.
Freshwater Potato Pearls. Freshwater Potato Pearls range in shape from round to oval, and have a lumpy surface appearance that resembles a potato. Because of their uneven surface, they add character and uniqueness to any Necklace, Anklet, or Bracelet. Our Pearls are graded A, A/B, B, B/C or C quality; A being the very best quality, while C, would be medium quality.