A large perfectly round jewel in the shape of a false eye.
This is found in Ada's Chapter 2. It is used to complete the model of the skull next to the sealed door in the second underground crypt area.
Category
Item (Object, tool or key)
Location
Ada - Chapter 2
Crypt. When you enter the second crypt section you will notice a zombie with this eye embedded in its eye socket. You must track down the zombie and kill it to retrieve the eye.