Sciencing on MSN

How Oysters Make Pearls And Why Some Are Different Colors

For at least 164,000 years, oysters have been part of the human diet, but people have been finding pearls in oysters for much ...

How oysters turn a tiny irritant into a pearl: What really goes on inside the shell

Inside an oyster, a tiny particle slips in and settles where it does not belong. It might be a parasite, a rough fragment, or ...