I'm a big fan of etheral blues in a marble, and so this almost didn't become available to the public, heh. In fact, I did keep it in my collection for a while, but alas, needed to release it. In addition to the crazy sweet blues, I love the interesting use of a good opal in a marble, and I love how Natey used this spherical opal, as a bright planet suspended in the middle of a rotating light bright nebula. This vortex really draws you in, space exploration at its finest. To top it all off, the backside of this one is AWESOME, with a thick starfield, and nice crescent moon. Space and marbles - has a better combination ever been birthed? I don't think so.