Over the decades that man has been collecting these shiny gems in the Herkimer district people have developed explanations, their “geologic story”, as to how Herkimer diamonds got there. Some of these older “stories” about how Herkimer diamonds were made are still on the Internet, and published in a non-scientific book as recently as 2014. Some of these old stories are still repeated by collectors as fact, rather than unsupported myth. These old myths are discussed on the "old theories" web page (see research page). This web page presents a new story about how Herkimer diamonds were made, a new theory - the Oil and Seed Crystal Theory, which is explained in more detail on the research page. This page presents an easy an overview of the new story, with easy to understand graphics, about how Herkimer diamonds were formed.
The Story of Herkimer Diamonds: How Were Herkimer Diamonds Formed?
Links to each page in the “How Herkimer Diamonds Were Made” overview are presented below - or you can click next in the lower right of this page.
Herkimer Diamond Event: The tiny crystals, and crystal frost, act as “seeds” on to which larger Herkimer diamonds grow.
Getting the Rock Ready: A series of geologic events occurred In the region to make a special “birth place”
The Fluid Follow Nature’s Pathways: The “birth place” rock had to be connected to the source deep in the earth.
The Fluids Make Dolomite: The limestone “birth place” rock is converted to a dolomite rock.
Hydrocarbons, Oil, Follow: The “holes” in the dolomite rock are coated sometimes filled, with oil.
Seed Crystal Event: Very tiny quartz crystal, and crystal frost, by the millions, are formed throughout the region.
Ice Ages and Weathering: Throughout the district the effects of weathering have had a important impact.
Photo byBlake Barnet 2015Found by AdamScanlon2015Crystal with a “BlackSeed” fromAD 8 x5 mm
To begin the story click next
Understanding How the Story is Presented: The story is presented in “layers”, explained here.
Best Website for Herkimer Diamond Information - Made Possible by Collector Donations
The information, and photography, on this website is copyright protected by W. David Hoisington, Ph. D. unless another author/photographer is cited.
Welcome to the New Herkimer Diamond Story!
Return often and follow this developing story. Refresh your browser (right click) to see new updates
Updated - 03/09/2019
Contribute to Herkimer Diamond research and have your name below!
Thank you Shannon Haley Wilbur for the donation of 30 samples from the Fonda region.1/05/2019 and 3/2/2019Check out her Facebook.