Terminations are flat surfaces or faces at the ends of crystals. Crystals with terminations on just one end are called singly terminated. The other end is either attached to a matrix or lacks faces. Crystals with terminations at both ends, like those shown here, are called doubly terminated. Set of 7 "Herkimer diamonds" (quartz). Herkimer Co., New York, USA. © Rob Lavinsky, www.iRocks.com. Used with permission.
Colorless Quartz Rough from United States
Terminations are flat surfaces or faces at the ends of crystals. Crystals with terminations on just one end are called singly terminated. The other end is either attached to a matrix or lacks faces. Crystals with terminations at both ends, like those shown here, are called doubly terminated. Set of 7 "Herkimer diamonds" (quartz). Herkimer Co., New York, USA. © Rob Lavinsky, www.iRocks.com. Used with permission.
Article: Gem Formation: How are Gemstones Created?
Credit: www.iRocks.com
| Gemstone | Quartz |
| Natural or man made | Natural |
| Origin | United States |
| Origin details | Herkimer Co., New York |
| Gem State | Rough |
| Color | Colorless |
| Transparency | Transparent |