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May 30, 2014
A pearl is formed when the mantle tissue is injured by a parasite, an attack of a fish or another event that damages the external fragile rim of the shell of a mollusk shell bivalve or gastropod. In response, the mantle tissue of the mollusk secretes nacre into the pearl sac, a cyst that forms during the healing process. Chemically speaking, this is calcium carbonate and a fibrous protein called conchiolin. As the nacre builds up in layers of minute aragonite tablets, it fills the growing pearl sac and eventually forms a pearl. It is a myth that a grain of sand or grit can cause a pearl to form, as nacre does not adhere to inorganic substances.
Natural pearls are formed by nature, more or less by chance and are rarely seen today. On the other hand, cultured pearls are human creations formed by inserting a tissue graft from a donor oyster, upon which a pearl sac forms, and the inner side precipitates calcium carbonate in the form of nacre.
The most popular and effective cultured pearl nuclei are made from a few select types of shells harvested in the midwestern states of the U.S. The majority of them are from the lower Mississippi Delta.
It is said that a strand of pearls for a lady's wardrobe is a basic must-have item, much like a man's blue sport coat or navy blazer.
Come by today and see our selection of Cultured Pearls.