Open Ground
The Herkimer Diamond Mines
Fee dig · est. ground for 500M-year crystals · Middleville, Herkimer County, NY
Open groundThe prize. Doubly-terminated quartz crystals, born faceted, half a billion years old
Where. Middleville, Herkimer County, NY
Status. Open ground
Where. Middleville, Herkimer County, NY
Status. Open ground
The account
The dolomite here holds pockets, and in the pockets sit crystals that come out of the rock already cut, eighteen facets, two points, water-clear. You break them free with a sledge and a chisel, and what cracks out of the stone is yours. Five hundred million years in the dark, ended by a Tuesday morning's stubbornness.
Leads, where the trail points now
- What you can keep: Doubly-terminated quartz crystals, born faceted, half a billion years old. Confirm the site's current rules and any day fee before you go.
- Where: Middleville, Herkimer County, NY. Private fee mines along NY-28, keep everything you free from the rock.
- Best practice: record anything notable, leave the ground as you found it, and check the latest access notices before you travel.
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