Tall Amethyst Cathedral Half GeodeWhere To Buy Amethyst Cathedral? Tall Amethyst geode cathedral with gorgeous crystal clusters that stand just over 4 feet tall. Visualize how this will sparkle in your space. Purple is the new touch of red and is the color of royalty. It will make an interior design statement a focal point in your home or office. Large stone accent piece Feng Shui earth element. Room statement element purple. Amethyst is believed to be the ninth stone placed on the