Holy SMOKES, this marble is smokin' AWESOME!!! This is absolute perfection in a marble, with a gorgeous mica blizzard core on the inside, sparkling away, and then a perfect rainbow cage twist on the outside of it. I absolutely guarantee this marble will be a major favorite from your collection! It is signed with the year '2007 EXP', meaning it is a one-of-a-kind experimental marble from 2007. These are the ones you want!