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Ace of Diamond Mine (AD) Open to the Public
The Best Site on the Internet for Herkimer Diamond Information - A Collaborative Project.
The information, and photography, on this website is copyright protected by W. David Hoisington, Ph. D. unless another author/photographer is cited.
 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
Welcome to the New Herkimer Diamond Story!
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DrC’s injury recovery is going well. New postings are expected this winter (February) (see What’s New page)