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Rocks & Minerals : How Are Pearls Formed?

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Uploaded on Jun 2, 2009

Pearls are formed when a bit of sand gets into an oyster, and the oyster excretes calcite to coat the irritant until it is smooth. Understand the pearl-growing process with information from a geology professor in this free video on rocks.

Expert: Jeffrey K. Wagner
Bio: Jeffrey K. Wagner is an associate professor of astronomy and geology. He has been a faculty member of Bowling Green State University Firelands since 1981.
Filmmaker: Bradley Walton

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