A small ellipsoid-shaped gem surrounded by a gold ring that is warm to the touch. It appears to emit some microwave radiation and has an infinitely complex lock end, but the key that would normally fit into it is missing. No attempts to open the lock have been successful and it is completely indestructible. Said to have been recovered several hundred years ago from a temple of an ancient god of death by a Scottish archeologist. Implied to actually contain our universe.