Herkimer diamond necklace 24k gold overlay 14k gold fill 18 inch chain Made in the USA
Herkimer diamonds are not actually diamonds, but are double-terminated quartz crystals of exceptional clarity (water-clear) discovered within exposed outcrops of dolostone in and around Herkimer County, New York and the Mohawk River Valley. They're called "diamonds" not only because of their clarity, but also because when they are found, they look like someone faceted them—but they are naturally "faceted" with double termination points, and 18 total facets (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 diamond or a Little Falls diamond.
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