Reference Terms
from Wikipedia, the free encyclopedia

Pearl

A pearl is a hard, rounded object produced by certain mollusks, primarily oysters.

Pearl is valued as a gemstone and is cultivated or harvested for jewellery.

Pearls are formed inside the shell of certain bivalve mollusks.

Note:   The above text is excerpted from the Wikipedia article "Pearl", which has been released under the GNU Free Documentation License.
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July 30, 2015

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updated 12:56 pm ET