are neither round nor symmetrical, but very distorted and irregular in shape. Often the surface is very uneven and they occasionally resemble such objects as teeth, cacti, tadpoles, mushrooms, or snails.
Pearls that are both non-symmetrical and irregular in shape. Used as a general term for any shape that does not fit other categories! Can include pearls shaped like popcorn, peanuts, bullets, rocks and so on.
Irregular shaped pearls of all shapes and sizes, neither round nor symmetrical. The surface is usually uneven. Most are inexpensive, but some have come to be the centrepiece for very expensive pieces of jewellery.