Where to Find Agate in Oregon

Oregon is the most varied agate state in the country. The Priday Ranch and Richardson's beds near Madras yield blue, plume, and moss-filled thundereggs from welded tuff. South of there, Glass Buttes in Lake County hosts flame-colored chalcedony with sagenite inclusions, and the Owyhee plateau on the Oregon-Idaho border produces the famous Owyhee blue agate and Morrisonite-style picture jasper. The central and southern Oregon coast — Agate Beach, Yachats, and the Coquille River mouth — yields tide-tumbled carnelian, banded agate, and small chalcedony nodules in winter storm gravels. Each district produces a recognizable color and habit. The most productive ground is in Priday Ranch / Richardson's thunderegg beds (Jefferson County), Glass Buttes (Lake County), Agate Beach and central coast tide gravels (Lincoln County).

Casual hand collection of common rocks and minerals like agate is allowed on most BLM and U.S. Forest Service land in Oregon, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.

Priday Ranch / Richardson's thunderegg beds (Jefferson County) is the standout. Other strong ground includes Glass Buttes (Lake County), Agate Beach and central coast tide gravels (Lincoln County).

Coast agate collecting peaks in winter, after big storms strip beach sand and expose gravel lenses. Inland districts work best from late spring through fall once roads dry out.