Pewter mermaid holding a cultured freshwater pearl on an 18″ tin-plated snake chain.
Cultured pearls can be divided into salt-water and freshwater varieties, and account for over 95% of world production. Freshwater pearls are grown in mussels when a nucleus of shaped mantle from another mollusc is placed inside. A mussel can grow between 10 and 20 pearls! Traditional metaphysical properties for the June birthstone pearl are modesty, chastity and purity. The pearl is also used to enhance personal integrity.