The agate stone is sliced, polished and finished on the front side, to show off the natural beauty of the stone. Some larger stones have the back side finished as well, others are left in their natural state on the back side. The top and side surfaces are left in an in their natural rock state. A light is inserted into the stone, and shines through the polished front surface of the stone. Makes a great night light or mood/accent light. Comes complete, just plug it in and turn it on! Weighs 5.25 pounds.