Silver Key (Tomb Raider 2)
From WikiRaider
The Silver Key is a key in Temple of Xian, in Tomb Raider II.
The Silver Key is located high on a rock in a large water chamber accessed by the Gold Key. Lara must make her way through a spider infestation before making the jump to the top of the rock.
The Silver Key unlocks a door near the Temple. Beyond are the several traps that lead up to the Second Lava Room.