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Gem Mountain Sapphire Mine — Rockhounding in Granite County, Montana

Gem Mountain Sapphire Mine is a mapped rockhounding spot in Granite County, Montana. Reported finds include sapphire. Below: coordinates, access notes, nearby spots, and trip-planning links.

Map showing Gem Mountain Sapphire Mine in Granite County, Montana

Quick details

Access
Public area
State
Montana

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified:

Found at Gem Mountain Sapphire Mine

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Gem Mountain Sapphire Mine.

Across the state line from Gem Mountain Sapphire Mine

Gem Mountain Sapphire Mine is close enough to the Montana border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Gem Mountain Sapphire Mine FAQ

Where is Gem Mountain Sapphire Mine?+
Gem Mountain Sapphire Mine is in Granite County, Montana, at 46.24675, -113.59216.
What rocks and minerals can you find at Gem Mountain Sapphire Mine?+
Gem Mountain Sapphire Mine is reported to produce Sapphire.
Is collecting allowed at Gem Mountain Sapphire Mine?+
Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.
How do I get to Gem Mountain Sapphire Mine?+
Open the directions link to navigate to 46.24675, -113.59216 in Google Maps. Some spots are remote — check road conditions before driving out.

More rockhounding in Montana

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