Lace Agate Wings Geode with Rare Blue and White Agate Laces and Rich Purple AmethystA Museum Quality Specimen, Perfect for a Collection with its Rare Agate Laces and Purple Amethyst Interior Ametista do Sul is known to be the only place in the world that produces agate geodes resembling butterfly wings, and it is safe to say that a specimen like this is among the best agate geodes ever found. This geode is impressive, with a pristine, damage free agate structure and world class agate laces, especially because of the purple amethyst