Two large button shells ( 1 inch long & 7/8th of an inch wide)  - also called Shiva's eyes - in a silver cage.

They are said to ward off evil, hence mean protection when you wear them.

White on one side, soft brown on the other.

They are found on the beach, and come from cone shells, closing them like a door.

The cage is 1 & 1/2 inch long( including the loop), & 1 inch wide.