Where: East · North America · approx. 43.0, -74.5 (vicinity only)
Why this spot: Herkimer diamonds (quartz)
What turns up: double-terminated Herkimer quartz crystals, small clusters, calcite
Access: Permission required.
Fee dig with on-site camping, keep what you find. Open seasonally, day passes and tool rental at the office. Details at crystalgrove.com.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.