Sometimes, there's more to iron pyrite than meets the eye. While testing it to differentiate between fool's gold and real gold ... lived on the bottom of the ocean some 450 million years ago ...

You may think you’ve struck it rich before the gold stones disappointingly flake apart in your hands. The stones are made of ...

The density of pyrite also means the fool's gold material thoroughly filled in tiny areas where the arthropod's body once lay in sediment − including internal body parts, scientists said.