Waterworn Vulcan "Natural" This stone fell out of the old Sea Terrace years ago and ended up back in the ocean. The Vulcan is subtle but obvious on top of a juicy green. Stone weighs 131 grams or 4.6 oz. It is 3.3" tall, 2" wide and is .5" thick. The stone is a "Natural" which means I have not touched it with wheel or paper although the stone is oiled.