Gem Mountain Sapphire Mine — Rockhounding in Granite County, Montana

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

Quick details

Access: Paid / fee dig
County: Granite County
State: Montana
Coordinates: 46.24680, -113.59170

Land & collecting status

Pay-to-dig site

This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.

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: April 1, 2026

BLM Montana — Recreational mineral collecting
Montana Bureau of Mines and Geology
Gem Mountain Sapphire Mine (fee-dig operator)
Community submissions reviewed against published agency rules

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 46.24680, -113.59170.

What rocks and minerals can you find at Gem Mountain Sapphire Mine?+

Gem Mountain Sapphire Mine is on the rockhounding map but no minerals are listed in our reference. Open RockHoundR to see what other rockhounds have logged.

Is collecting allowed at Gem Mountain Sapphire Mine?+

Pay-to-dig site. This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out. 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 46.24680, -113.59170 in Google Maps. Some spots are remote — check road conditions before driving out.

More rockhounding in Montana

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Open Gem Mountain Sapphire Mine on the map

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