Blister Pearl

A blister pearl is a type of pearl that forms attached to the interior shell of a mollusk, having a flat base and a dome-shaped surface.

Part of speech: noun
Definition: Blister pearls, unlike traditional free-floating pearls, develop attached to the inner wall of the mollusk's shell. This attachment results in a distinctive flat side where the pearl was connected to the shell, contrasting with its otherwise rounded, dome-like appearance. The process of formation is similar to other pearls, initiated by an irritant, but the immobilization against the shell wall gives the blister pearl its unique shape. These pearls are often used in jewelry with the flat side set against the setting, showcasing the pearl's lustrous dome. Their unique form and mode of development make blister pearls a fascinating and beautiful option for pearl jewelry, providing a natural and captivating aesthetic.