Do all oysters have pearls?
Although clams and mussels can also produce pearls, they don't do so very often. Most pearls are made by oysters, and they can be made in either freshwater or saltwater environments. As oysters grow, an internal organ called the mantle uses minerals from the oyster's food to produce a substance called nacre.
Are Pearls alive?
The mussels, oysters and other mollusks that produce pearls are certainly alive butpearls are not. So how can they die? ... There is a phenomena known as deadpearls. This happens when a mollusk gets a deposit of minerals (or just plain muck) in their shell and it affects the growth of the shell.Apr 20, 2014
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