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Oswego County Tourism
 
 

Ace of Diamonds Mine

Digging for Herkimer Diamonds is fun and can be enjoyed by prospectors of any age...

1-315-892-3855
84 Herkimer St
Middleville, NY 13406
Explore Ace of Diamonds Mine Using Our Interactive Map
Digging for Herkimer Diamonds is fun and can be enjoyed by prospectors of any age. Family owned and operated, the Ace of Diamonds Mine and Campground is just 12 miles from Herkimer. These brilliant, water-clear quartz crystals are composed of silicon dioxide and are hard enough to scratch glass.


Campsites are available right where you dig and prospector tools are available for rent or for sale, but small hammers and garden tools also work. Diggers take home all the diamonds and rock specimens they find. 
 
 
 
 
 

Middleville, NY

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