Polished Thunder Egg Half

Thunder Egg

Richardson Ranch, Madras, Jefferson County, Oregon, USA

Thunder Eggs are often considered to be solid volcanic geodes but that is technically not correct as a Thunder Egg can result from various nodules other than just a geode. However this beautiful chalcedony filled geode has gorgeous multi-colores chalcedony that shows some previous growth stages! Whether it is a geode or not doesn't matter. It's gorgeous!