Gem Mountain — Rockhounding in Madison County, Montana
Gem Mountain is a mapped rockhounding spot in Madison County, Montana. Reported finds include sapphire. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Gem Mountain in Madison County, Montana
Quick details
- Access
- Paid / fee dig
- County
- Madison County
- State
- Montana
- Coordinates
- 45.34300, -112.35600
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:
- 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
Found at Gem Mountain
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.
- Ruby RiverTop pick in MontanaMadison County, Montana · 14 mi awayAlmandine Garnet
- Frying Pan BasinBeaverhead County, Montana · 19 mi awayCorundum, Opalized Wood, Silicified Wood
- Virginia CityMadison County, Montana · 20 mi awayGarnet, Gold
- EnnisMadison County, Montana · 23 mi awayAndalusite, Kyanite, Sillimanite
- Bismark MineMadison County, Montana · 24 mi awayMolybdenite, Pyrite, Chalcopyrite
- Jefferson RiverMadison County, Montana · 24 mi awayAgate, Chalcedony, Jasper
- ArgentaBeaverhead County, Montana · 26 mi awaySilver
- Mill CanyonMadison County, Montana · 27 mi awayTourmaline
Across the state line from Gem Mountain
Gem Mountain 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 FAQ
Where is Gem Mountain?+
What rocks and minerals can you find at Gem Mountain?+
Is collecting allowed at Gem Mountain?+
How do I get to Gem Mountain?+
More rockhounding in Montana
See all 87 Montana spots →Open Gem Mountain on the map
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