This beautiful specimen was self-collected in Fonda, New York. These crystals are widely sought after.
Herkimer diamonds are not actually diamonds, but are double-terminated quartz crystals discovered within exposed outcrops of dolostone in and around Herkimer County, New York and the Mohawk RiverValley. The "diamond" in their name is due to both their clarity and natural faceting - crystals possess double termination points and 18 total faces (six on each point, six around the center). Because the first discovery sites were in the village of Middleville and in the city of Little Falls, respectively, the crystal is also known as a Middleville diamondor a Little Falls diamond.
Herkimer diamonds became widely recognized after workmen discovered them in large quantities while cutting into the Mohawk River Valley dolostone in the late 18th century. Geologists discovered exposed dolostone in Herkimer County outcroppings and began mining there, leading to the "Herkimer diamond" moniker. Double-point quartz crystals may be found in sites around the world, but only those mined in Herkimer County can be given this name.