This incredible marble is a ton of detail packed into a really small package. The marble was handblown and torchworked by John Long. Each side of the marble is intended to be a sea urchin or sea anemone. This one of a kind marble is guaranteed to provide hours of speculation. It is roughly the size of a golf ball. This marble has been sold. The design is too complex to be replicated. Double sided inside out marbles can be made to order. The designs will vary.