Crystal Grove Diamond Mine & Campground
St. Johnsville, Town of Oppenheim, NY 13452
Herkimer Diamonds are world famous quartz crystals found only in specific locations in New York State. Digging for these diamonds at Crystal Grove is fun for all ages. Campground for RV and tenting. We are a pet-friendly place to stay alongside Timmerman Creek. Dig for diamonds and shop our gift and rock shop during your vacation.