Amethyst Cathedral Geode Tri-color FormationRare Natural Amethyst Geode with 3 Color Tones: White, Black and Purple. A Amethyst Geode bringing a superb formation with the 3 different colors, with the bottom being a deep purple Amethyst, which has a subtle change to a dark, smoky amethyst in the middle and then the crystals become translucent, white. On a very rare growth pattern never seen before. Perfect for any space, this geode will be a conversation starter because of its uniqueness. It is