by
Rubin Jones
Language: English
Release Date: May 2, 2016
A pearl is formed when a foreign object gets into the mantle of a mollusk. This irritation becomes covered with successive layers of nacre, which is the mother of pearl, and eventually forms a pearl. Cultured pearls are probably easier to match, but natural pearls are more valuable. For the cultured variety, pearl farmers keep the special oysters in confinement.