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Why Do Oysters Make Pearls? [Solved]
Pearls are made by marine oysters and freshwater mussels as a natural defence against an irritant such as a parasite entering their shell or damage to their fragile body. The oyster or mussel slowly secretes layers of aragonite and conchiolin, materials that also make up its shell.
How and Why Do Oysters Make Pearls?
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How Do Oysters Make Pearls?
Quick Questions gives you the low-down on how
Formation of a Pearl | Secret Life of Pearls
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