This stunning raw Herkimer Diamond is prong set in our Fine Sterling Silver. Herkimer Diamonds are beautiful quartz crystals of the magnificent works of nature, found to have a natural diamond-like shape. Each Herkimer Diamond is slightly different making your piece one-of-a-kind.
Herkimer diamonds are not actually diamonds, but double-terminated quartz crystals discovered within exposed outcrops of dolomite in and around Herkimer County, New York and the Mohawk River Valley. from Wikipedia