1 legal place to look for opal in Idaho — fees, seasons, and official sources below.
Hours, fees, and access rules change. Verify with the operator or land agency before you go.
Spencer, ID
precious opalcommon opal
Fee dig · Fee, seasonal · $75 per adult and $50 for children under 16 to dig the tailings pile, including a 2.5-gallon bucket for your ore and help from the mining staff. No reservations needed.
Checked against its source August 16, 2026
Start with the 1 legal place listed on this page — each shows what you can find, its fees, and its season, with a link to the official source. Hours, fees, and access rules change. Verify with the operator or land agency before you go.
Treat Idaho's historic mines as history, not destinations. Most sit on private land or active mining claims, and old workings are dangerous even to walk. The state page's mineral record tells you what the ground holds — the directory tells you where you are welcome to look for it.