Like all of Mark's UV marbles, this one is made out of 100% uranium glass, and thus it lights up like a Christmas tree on fire when you put a black light on it. Seriously, it is unbelievably bright! Usually when I take the black light pics, I have to set the exposure to either 2 or 4 seconds in order to get enough ultraviolet light in there to light up the UV glass for a good shot. But with Mark's marbles, even a half second is too much! Truly amazing glass!!

This marble is one of Mark's awesome James Bond marbles, featuring 3 air traps floating inside - 0 0 7! Ha ha, so awesome, and SOOOO hard to keep a design like this under control while the glass is hot, and yet still so perfect. Mark is such a master!! Signed 'Matthews 2007'.