Buried treasure isn't worth much.

There are some things of which the worth cannot be calculated, treasures beyond measure or value.

A box without hinges, key, or lid, yet golden treasure inside is hid.

Treasure means nothing unless it is discovered and even then the value depends entirely on who discovers it.

There is all the difference in the world between treasure and money.

What is the value of the treasure: if you have the means and no one makes a living in it