This site was last updated on July 20, 2009

Special Recognition for Contributions to this Site 

and Links to Resources for "Rock Hounds" 

Definitions and Scope:

The best website on "Herkimer Diamonds"

Thanks to Mike Eggleston for his help and support. Mike is one of the few folks thus far who has contributed "junk" specimens to the project.  They were very important in advancing our knowledge.
There are many people who have gained knowledge about Herkimer Diamonds, how they are found, and how the occur in the rock.  Here we will acknowlege those people who share any knowledge, photos or specimens that contribute to this website.
Click to Visit His Site ->
Appreciation to "Deputy Mike" at Diamond Acres for his input and open sharing of information.
Special Recognition:
Collecting Links and Resources:
See also photos of "in place" mineral zones ->
Please help with picture donations! And resource information for the public. Visit ->
Special recognition to the staff of the New York State Museum for their support and encouragement
Thanks to Bill and Anne for their enthusiastic participation in this community project and their promise of contributing "junk specimens" whenever they can. 
Note the strong development of the blocky features in the host rock.  Knowing how to move square blocks really helps with collecting.
A public service project always open to input  from the community interested in Herkimer diamonds.
Video by Joseph Kapelewski

If you want a good buy on Herkimer diamonds visit Mike's website. 

Although there are links below that provide some "tips" to help you collect Herkimer diamonds, one of the best tips is to increase your knowledge on how they were formed.  Visit all the pages on this website and expand your knowledge.  In the future we will have "tips" for every mine.
Web page author - W. David Hoisington, Ph.D.
Thanks to Amy Wilkinson for her support with microscope pictures.  All microscope pictures are done with the support from the NY State Museum.
Ted Smith, the owner of "Ace of Diamonds" in Middleville, NY was gracious and helpful.  He not only took time to provide total mine access, but he also donated specimens for research.
Send him an email if you are looking for something.
Thanks to Bob from N. Adams who sent a box of very useful specimens.  He has also promised to be a continued supporter of this research which is shown in the careful eye he has for odd features.

The owners of Turtle Clan Ridge (private location) have donated specimens to be photographed, donated "junk" material,  and allowed unparalled access to the location to help advance our understanding of Herkimer diamonds.  A huge hand of gratitude to them!

There are other folks who have contributed photos and their names are given throughout the website.
Don't forget to visit the pages on this web site (use the front page or the buttons at the top) and learn about the history of Herkimer diamonds.  This will improve your collecting experience and your success.
Important Note:  Herkimer diamonds occur in zones, or layers.  For a discussion of this click on the following link: