Rare Baby Blue Agate Butterfly Geode with Botryoidal Chalcedony on AmethystExtremely Rare Baby Blue Botryoidal Chalcedony Butterfly Geode on Moss Agate Matrix This exceptionally rare Baby Blue Chalcedony Butterfly Geode was discovered in the mines of Ametista do Sul, Brazil. Its pastel blue chalcedony formed over a natural agate and amethyst matrix, then was cut into mirrored wings that reveal the internal beauty of this formation. The soft blue chalcedony developed over botryoidal nodules, creating smooth, rounded surfaces