This is a rare and fascinating Universe marble indeed!! It features one of the largest caged opals I've ever seen, which a huge opal chunk surrounded by a large cage made from disco sparkle. Some of the cages are more 'in your face' while this one is more subtle, more etheral and spacey, just the way it should look in a space marble! Joining it are two super nice planets, including one I really love with beautiful green striping on it, a rich vegetative planet which seems to enjoy cultivating in broad swaths of land. This is a nice-sized planet and it offers loads of viewing pleasure as you twist and turn it to explore all the nooks and crannies of space inside this fantastic Universe. Love this marble!!