RockHoundR

Where to Find Agate in Utah

Utah agate splits between the volcanic agates of the southwest and the sediment-hosted agates of the south-central deserts. Brian Head agate, from the high plateau in Iron County, is the best-known of the volcanic suite, with red, white, and pink banding in chalcedony from late Tertiary rhyolite. Dugway in the Thomas Range produces chalcedony geodes with banded interiors. The Black Hills southwest of Delta yield apple-green chalcedony, and the San Rafael Swell carries flat lake-bed agate in the Morrison Formation. Surface collecting limits are set by the local BLM field office and run from a daily 25-pound personal-use cap upward.

Spot list checked against source data on April 1, 2026.

Open the full map

Every agate spot we track in Utah

Standout agate spots in Utah

Hand-picked from the full list above, with the reason each one earns a trip.

Best counties for agate in Utah

Ranked by the number of mapped agate spots. County links open the full rockhounding page for that county.

Before you go

Read the agate identification guide so you know what a keeper looks like in the field: Agate in the encyclopedia.

Agate in Utah FAQ

Where can you find agate in Utah?+
The mapped spots concentrate in Grand County, Emery County, and Garfield County. Known collecting areas include Brian Head plateau (Iron County), Dugway geode beds (Juab County), and Black Hills chalcedony (Millard County). Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many agate spots are mapped in Utah?+
32 spots across 11 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.
Is it legal to collect agate in Utah?+
Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 28 of the 32 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.

Where else to find agate

More minerals to hunt in Utah

Hunt agate in Utah with the map in your pocket

RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.

Download on the App StoreGet it on Google Play