14k Gold and Trilobite Fossil. Trilobite is an ancient water species that existed on Earth 540 million years ago. It was wiped out 250 millions years ago in a period that some call "The Great Dying" when 90% of living creatures on earth came to an end. Gives me that special feeling of no beginning and no ending. That we are a part of this very long line of existence. And that makes me very excited. Here is a chance to wear a piece of existence over a hundred million years old.