AAA Amethyst Geode Cathedral with Deep and Dark Purple Amethyst on Rare Blue Agate MatrixExtraordinary Amethyst on Agate Geode Cathedral: Sparkles of the Deepest Purple, Contrasting with the Deep Blue Agate An Amethyst Geode of this extraordinary quality is a once in a lifetime finda true masterpiece that showcases the deepest shades of purple blending beautifully with the agate banding and adorned by an Amethyst Crown. This exceptionally rare agate amethyst geode is highly valued and is destined to occupy a premier position in any world