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Est. on the Olympic Peninsula · USA

The American rockhounding field guide.

Where to find rocks, minerals and fossils — site by site, state by state. Real coordinates, access notes, collecting law, and the clubs that know the ground.

50States
400+Dig sites
120Clubs
01 — The field map

Where to rockhound

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WA · United States

Washington

42 documented dig sites
AgateJasperFossilsCarnelian
Best seasonOct–Mar
DifficultyEasy
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03 — Field card

Featured locality

OLYMPIC PENINSULA · WA

Beach agates of the Strait of Juan de Fuca

◎ 48.15° N, 123.50° W · public beach · low-tide access

Wave-polished agate, jasper and carnelian wash up along the northern Olympic Peninsula — a classic Pacific-Northwest hunt, best on a falling tide after a winter storm.

What you’ll findAgate · Jasper · Carnelian
DifficultyEasy · surface
Best seasonOct–Mar

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FIELD & STONE

Field & Stone is the American rockhounding field guide — where to find rocks, minerals and fossils across all fifty states. Real localities, the best seasons, collecting law and the rock & gem clubs that keep the craft alive, from the Olympic Peninsula agate beaches to the diamond fields of Arkansas.

Est. on the Olympic Peninsula · USA

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Where to Rockhound — the atlas Field guides & how-to Rock & gem clubs Lapidary directory Collecting ethics & the law

Popular states

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