escape from death

Once you pick up the delicate diamond, you admire its sparkling surface, when suddenly a shrill alarm sounds. Startled, you jump and the diamond falls to the floor and shatters. You crouch down to examine the fragments, when you notice the walls are closer to you then they were before. You realize that the walls are slowly closing in on you, and in a few minutes, you will be crushed between them. You begin to panic and try to decide what to do next.