Thunderegg
Official State Rock of Oregon
Oregon designated the thunderegg as the official state rock in 1965 after the rockhounds of Oregon voted it as their first choice. All State Rocks
Found chiefly in Crook, Jefferson, Malheur, Wasco and Wheeler counties of Oregon, each thunderegg is unique in pattern, design and color. Cut and polished, thundereggs reveal exquisite designs. They are a wonder of nature and are sought after and highly prized around the globe.