Where Can Herkimer Diamonds Be Found?

The Herkimer Diamonds are over 500 million years old and are only to be found by the Mohawk River in Herkimer County upstate New York. Here lived the Mohawk Indians where they accidentally found the diamond, which is actually a quartz crystal.

Where can I find Herkimer Diamonds?

Herkimer Diamond Geology and Geography

Although Herkimer County, New York is the location for which these crystals are named, similar doubly terminated quartz crystals have been found in many other locations, including Arizona, Afghanistan, Norway, Ukraine, and China.

What kind of rock are Herkimer Diamonds found in?

The Herkimer Diamond began forming nearly 500 million years ago in pockets within a sedimentary rock called Dolostone (Dolomite + Limestone). Sedimentary rock, different from its two cousins Igneous rock and Metamorphic rock, is formed by layers of mineral and organic matter under hundreds of million years of pressure.

Robert Thorne

Robert Thorne

Automotive & Future Transportation Editor

Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.