The Wild Iris Bed, located in Jefferson County, Oregon, is known for producing visually striking thundereggs with vivid agate centers and intricate internal patterns. Eggs from this site often showcase bold colors—lavender, blue, gold, and red—along with moss or plume inclusions that give them a floral, organic appearance true to the bed’s name. The rhyolite matrix is typically pale and rugged, with nodules ranging from medium to large in size. Wild Iris material is especially prized by lapidary artists for its vibrant contrasts and polishability, making it a standout among Oregon’s collectible thunderegg beds.
Rocks of the Cascades – Thundereggs, Tools & Tradition