Mabe pearls are a type of cultured pearl that form against the inside of a mollusk shell, typically the Pinctada margaritifera or Pinctada maxima. Unlike traditional round pearls, mabe pearls are semi-spherical and are often used in jewelry. They are created by inserting a small bead or piece of tissue into the shell, allowing the mollusk to deposit layers of nacre over time. These pearls are known for their unique shapes and vibrant colors, which can range from white to pink, green, and blue. Mabe pearls are often set in gold or silver jewelry, making them popular for earrings, pendants, and rings. Their distinct appearance and affordability contribute to their appeal in the jewelry market.