This is one of my favorite larger crystal specimens here. It has light amethyst on the bottom and a perfect demarcation about halfway up to a zone which is, in startling contrast, a briliantly glassy and lustrous smoky color. It also has a wonderful moving water bubble near the top for added bonus. What I find really neat is that you have this sharp demarcation of COLOR without a GROWTH demarcation?! This is bizarre...you expect and see generally from this location a scepter or change in growth when the color of the crystal changes. Or a phantom at the leat. But this bicolored beauty is, as I said, bizarre in that there isn't the slightest growth demarcation or surface change - the crystal just kept on, schizophrenically, growing.