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Where to Find Chalcedony in Idaho

Idaho has 7 mapped collecting spots that report chalcedony, spread across 7 counties. 6 of the spots are on land mapped as publicly accessible.

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

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Every chalcedony spot we track in Idaho

Standout chalcedony spots in Idaho

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

Best counties for chalcedony in Idaho

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

Before you go

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

Chalcedony in Idaho FAQ

Where can you find chalcedony in Idaho?+
The mapped spots concentrate in Ada County, Blaine County, and Butte County. Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many chalcedony spots are mapped in Idaho?+
7 spots across 7 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 chalcedony in Idaho?+
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. 6 of the 7 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.

Where else to find chalcedony

More minerals to hunt in Idaho

Hunt chalcedony in Idaho 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.

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