4+ Yes, you figure it out

Some twists, some turns, some moving of pieces, and before long things are clicking into place. Turning any one gear would turn more and more of the others as you got closer to the solution.

After a few minutes of work you finally get to where every last moving piece would move in unison. At this moment you hear a Kachunk! and the whirring of gears as the pillar comes to life. Everything now moving on its own.

As the gears spin the pillar slowly lowers itself into the floor revealing within it a slender pedestal. Upon the pedestal lie one of the dungeons rubies along with a fine silver amulet of elvish make.

(Add 1 Ruby and Amulet to your Items.)

Studying the amulet closely you realize you had seen a similar item before. It bestowed some sort of protection on you though you could not remember what.

Looking around you realize there is little more to discover in this room. Taking your treasures you leave the room.