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Idaho

Spencer Opal Mines, ID

Gem locality Source-confirmed findsPermission required

What you could find

Reported finds from this ground.

OpalOpal

Photos via Wikimedia Commons: Dpulitzer (CC BY-SA 4.0).

Why this spot

Rockhounding locality: precious opal in banded rhyolite lithophysae

Long-operating precious-opal fee-dig, documented in guides and by the state geological survey.View source →

Before you go

Hazards noted for this site.

Mine dumps, sun exposure

Keep exploring nearby

More spots in this area.

Check access and collecting rules for each site.