Effects Opens stone door in the Dark Maze
Source Underground Piers
Game(s) Alone in the Dark (1992)

The Gem is used to open the stone door at the end of the Dark Maze. The door has a hole, in which the Gem is to be placed, triggering the door to rise. The Gem is found in the locked Pirate's Chest located in the Underground Piers section beneath Derceto.

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