8. The Barley Field Treasure
$495, 000
The Barley Field treasure is next on our list of biggest hidden treasures ever found in the world and is one of those treasures discovered by amateurs at places where they were not even searching for one. This thing happened to Martin Eliot who just wanted to teach his cousin how to use a metal detector, eventually discovering more than 9, 000 antique coins buried in the field.
