I agree with JQ about both the background and the contents of the ball. I think this is a marble, though, and suspect there's no stickiness inside at all. It looks like one of those large, spectacular marbles that you used to be able to buy (and maybe still can) individually at a premium price. Beautiful.
Always remember - Follow the Yellow Brick Road, it will lead you to the Emerald City and OZ A very nice place to repose. Trust me on this one, I live there ............The Lion...................... MY GALLERY - The Magical Mystery Tour