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Why Do Oysters Make Pearls?
:max_bytes(150000):strip_icc()/700048-001-56a5f6d25f9b58b7d0df4f14.jpg "How Pearls Form and Which Species Makes Them")
How Pearls Form and Which Species Makes Them
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Pearls: what they are and how pearls formed | BBC Wildlife | Discover Wildlife
