“Herkimer diamonds” are actually clear, double-terminated quartz crystals found in Herkimer County, New York. “Crystals of quartz var. Herkimer,” Middleville, Town of Newport, Herkimer Co., New York, USA, by Géry Parent is licensed under CC By-ND 2.0
Colorless Quartz Specimen from United States
"Herkimer diamonds" are actually clear, double-terminated quartz crystals found in Herkimer County, New York. "Crystals of quartz var. Herkimer," Middleville, Town of Newport, Herkimer Co., New York, USA, by Géry Parent is licensed under CC By-ND 2.0
Article: The Collector’s Guide to the Minerals of New York State: Book Review
Credit: Géry Parent
| Gemstone | Quartz, Rock Crystal |
| Natural or man made | Natural |
| Origin | United States |
| Origin details | Middleville, Town of Newport, Herkimer Co., New York |
| Gem State | Specimen |
| Color | Colorless |
| Transparency | Transparent |