This HUGE vortex marble has some of the most beautiful rainbow dichro you will EVER find! I don't know how Kevin did it, but WOW. The gold fumed and raked backside is super tight, and it really sets off the dichro glory in this genius marble. This is a real eye catcher and will be a conversation piece for your collection for sure! Oh, and did I mention how historical it is, well over a decade old now, created back in 2002!! Yes, the vortex MASTER. Signed with Kevin O'Grady signature chip, year 2002.