The Best Site on the Internet for Herkimer Diamond Information - A Collaborative Project.
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Take Rt. 28 north from Herkimer, NY and go past the Herkimer Diamond KOA campgrounds on the right (and store on the left). The Ace of Diamonds mine is just a little further on the left, but the entrance is difficult to see if you haven't ever been there. Look for mine equipment up on a hill and then the turn in is a reverse Y. You may miss it and then proceed to a safe place to turn around and head bcak to the Y junction.
Ace of Diamond Mine (AD) - Directions
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