This is one of those marbles that maybe on first glance doesn't look like much...but then you picked it up and all you hear is "WHOOOOOOOOOOOOOAAAAAAAAAAAA!!!!!" That's because all of the dichro squares on this one are inverted, so you see the black/clear checkerboard pattern on the outside....and then you look through the clear core to the other side of the marble and you see the dichro sides of the squares, and they're MAGNIFIED!! It is an awesome effect, and I am having a very hard time letting go of this one, which I would have never called when I first laid eyes on it. It's just such a great concept! Go here to check out a video of this marble which gives you a good idea of what I'm talking about: Inverted EyePop Video This is a fresh 2014 marble. Love it so much......