Golden Star
From WikiRaider
The Golden Star is a key item found in the level The Lost Library in The Last Revelation. A total of three Golden Stars are found, and they are used to open a small gate that leads to the room with the Globes Riddle.
The first Golden Star is pried off from a column with the crowbar in a room with big mechanical gears. The two other Golden Stars are found on a wall in a room, where Lara must swim through underwater passages.