1 legal place to look for beryl — emerald and aquamarine among them in Colorado — fees, seasons, and official sources below. The historic record adds the underground story: 344 entries.
Hours, fees, and access rules change. Verify with the operator or land agency before you go.
Nathrop, CO
aquamarineberylsmoky quartz
Public land, rules apply · Free · No fee and no permit for low-disturbance hand collecting on open national forest ground. Mount Antero is densely covered with active mining claims, however, and working someone else's claim without permission is illegal - check reports.blm.gov/reports/MLRS and contact the Salida Ranger District at (719) 539-3591 before you go.
Checked against its source August 16, 2026
Mineral history, not an invitation. This mineral history comes from a federal record of historic mines, prospects, and occurrences. It is not a list of places to collect. Historic mine sites are usually on private land, under active mining claims, or unsafe to enter — and often all three. The places you can actually collect are in the legal-access directory below.
The federal record lists 344 historic entries involving beryl — emerald and aquamarine among them in Colorado , clustered in Larimer, Fremont, Gunnison counties. That geography is the honest clue about which corners of the state carry the right rocks — read it as geology, then pick a legal place to test it.
Records from the USGS Mineral Resources Data System, a legacy federal database last revised August 2022 and no longer updated.
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 Colorado'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 mineral record on this page tells you what the ground holds — the directory tells you where you are welcome to look for it.