Herkimer Diamond Mines
Pay-to-dig gem mine · Herkimer, NY
Herkimer Diamond Mines in Herkimer, NY offers: herkimer diamond quartz crystals in above-ground mines (hammer); sluice station; everything you find is yours to keep. Details below are from the official website, checked 2026-11-04.

| Type | Pay-to-dig gem mine (Surface crystal mine) |
|---|---|
| What you can do | Herkimer diamond quartz crystals in above-ground mines (hammer); sluice station; everything you find is yours to keep |
| Location | Herkimer, Herkimer County, New York |
| Address | 4626 State Route 28 North, Herkimer, NY 13350 |
| Coordinates | 43.12677, -74.97704 (map) |
| Managed by | Call to confirm |
| Fees | Admission includes an all-day prospecting ticket, gem collection bags and use of a rock hammer (amount: see official site) (per official website, checked 2026-11-04) |
| Hours | 9am–5pm, 7 days a week, April 12 – October 31, 2026 season (per official website, checked 2026-11-04) |
| Phone | Not listed in source |
| Website | https://herkimerdiamond.com/mine/ |
Verify before visiting. Hours, fees, access and collecting rules change, and some listings come from community-edited data. Call or check the operator's official page before you go. Details we could not confirm are marked "call to confirm".
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Source: official website, checked 2026-11-04. Data retrieved 2026-11-04.