Shell pearls are a type of synthetic pearl that is made from the shells of mollusks. These pearls are created using a process known as pearl cultivation, in which a small piece of shell or bead is inserted into the mollusk. As the mollusk grows and secretes nacre, a substance that gives pearls their characteristic luster, the shell or bead becomes coated in nacre and forms a pearl.

Shell pearls are widely used in the jewelry industry because they are more affordable than natural pearls and are available in a wide range of sizes and shapes. They are also more durable and resistant to damage than natural pearls, making them a popular choice for everyday wear.