•Authentic pearls are formed by molluscs when an irritant gets into the creature. It reacts by coating the irritant with layers of nacre, which eventually builds up and forms into a pearl.
•Shell pearls, on the other hand, are created by humans using the inner lining of oyster shells, the substance known as Mother of Pearl.
•This makes shell pearls quite interesting, because although they’re made by humans, they are made of the same materials as real pearls.
•How Are Shell Pearls Made?
•Unlike imitation pearls which contain glass or plastic, the base of shell pearls is nacre. The pearl is made using a bead of mother-of-pearl.
•First, nacre is collected, then pulverized and combined with other materials to form pearls. The outer surface is then coated and polished to attain the luster that we associate with pearls.
•Taken this way, shell pearls are fake pearls, but they’re made using the same ingredients as a cultured pearl. Because of this, we like to think of shell pearl as synthetic pearl or lab-created pearl, rather than a fake pearl. Although the process is different, shell pearls, in essence, are quite similar to lab-created gemstones.