how do oysters produce pearls?

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paul.fr

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how do oysters produce pearls?
« on: 09/06/2007 22:50:38 »
how do oysters produce pearls, and for what purpose?

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Offline kdlynn

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how do oysters produce pearls?
« Reply #1 on: 10/06/2007 03:56:22 »
i don't know what the substance is, but they form the pearl around, essentially, a piece of dirt or something that floats into the oyster. they do it to make the dirt or whatever smooth so that it doesn't scratch them.

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Offline kdlynn

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how do oysters produce pearls?
« Reply #2 on: 10/06/2007 03:56:54 »
i knew something!!

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Offline dentstudent

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how do oysters produce pearls?
« Reply #3 on: 11/06/2007 08:14:18 »
I think it's calcium carbonate that is also used in the lining of the shell and is called Nacre, or more commonly known as "mother of pearl".