An amazing specimen with absolutely top color and gorgeous gemminess! This is very 3-D and sculptural, and consists of two generations of fluorite: a sharp cubic form with glassy faces and gem interior, perched atop a previous generation of yellow fluorite. Where the later fluorite is deposited, the internal yellow cube faces are protected from the etching that seems to have selectively dissolved the rest of the yellow fluorite, leaving behind this weird specimen showcasing wonderful cube faces perched on stilts of yellow fluorite. I don't know how else to say it. It is pretty neat in person....more so than the pics indicate