Ace of Diamonds & Herkimer Diamond Mine — Rockhounding in Herkimer County, New York

Quick details

Access

Public area

County

Herkimer County

State

New York

Postcode

13406

Coordinates

43.13146, -74.97414

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.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Ace of Diamonds & Herkimer Diamond Mine

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

• Herkimer DiamondEncyclopedia →