Amethyst: The amethyst found in the Brazil/Uruguay region is some of the most beautiful in the world. The chamber in this very large and remarkable specimen is a perfect example of Quartz crystals which alternate between Quartz and Amethyst while travelling to the center. It is a real treat for the eyes to follow the growth of these remarkable Quartz crystals as they travel inward and become tinged with the minerals which magically transform them from Quartz to Amethyst. This is typical of crystal lined geodes especially from this region. This specimen with the remarkable painted surroundings makes for the truly fabulous one of a kind work of art to grace any wall.