Small Jewel

Two Small Jewels are found in Sol Sanctum. Each one is placed into a different minotaur-esque head carved into the wall. Doing so opens a hidden door in the room that leads further into the Sanctum.

The Small Jewel is an important item which can neither be bought, dropped or sold. There are no Small Jewels available in the second game unless they are hacked by an action replay device and transfered over or are hacked into the inventory of the second game itself.