Here is an unusual amethyst specimen which has been mounted in an unusual way: upside down. With the termination up like any normal amethyst crystal this is actually an exceptional example with perfect, glassy faces, and a lots in internal air cavities. But the reason it's mounted upside down is because this isn't just another great amethyst point. What makes it special is that the bottom/backside of the crystal is completely covered with glassy Analcime crystals, and this tells a story about the life of this specimen. At some point in its life the amethyst crystal broke off of its host and became covered up in such a perfect way that only the broken contact area was exposed. It's on this exposed area that the Analcime crystals grew.