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, but is explained here with illustrations that help to make it easy to understand. This page presents an overview, displayed in a pictorial representation, of this new story about how Herkimer diamonds were formed.
The Story of Herkimer Diamonds: How Were Herkimer Diamonds Made?
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 act as “seeds” from which larger Herkimer diamonds are grown.
Getting the Rock Ready: A series of geologic events all occurred to make a special “birth place” in limestone.
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 covered, sometimes filled, with oil.
Seed Crystal Event: Very tiny quartz crystals, 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.
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.
Welcome to the New Herkimer Diamond Story!
Return often and follow this developing story. Refresh your browser (right click) to see new changes made weekly.
Dr C will presentHerkimer Diamond Discoveriesat the 2017 Herkimer Diamond Festival