What is Pearl?


 
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What is Pearl?

Pearls are hard objects produced within the soft tissue of a living shelled mollusc such as a clam or oyster. Like the shell of mollusc, pearls are composed of calcium carbonate (CaCO3) in crystalline form which has been deposited in concentric layers.

The most valuable pearls are perfectly round and smooth, and produced spontaenously in the wild. However "cultured pearls", also known as "farmed pearls", which are produced by pearl oysters and freshwater mussels make-up the majority of pearls currently sold. Additionally, imitation pearls (manmade objects that are intended to look like pearls, but are not in fact pearls at all), are common among inexpensive jewelry items.

Freshwater pearls:
Freshwater pearls






 
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