Agate is a variety of quartz (which has a hexagonal mineral habit) that is an aggregate or polycrystalline material. “Chalcedony: (Var. Agate),” Juchem Quarry, Niederworresbach, Idar-Oberstein, Hunsruck Mts, Rhineland-Palatinate, Germany. © Rob Lavinsky, www.iRocks.com. Used with permission.
Opaque Brown Agate Other from Germany
Agate is a variety of quartz (which has a hexagonal mineral habit) that is an aggregate or polycrystalline material. Agate specimen, Juchem Quarry, Niederworresbach, Idar-Oberstein, Hunsruck Mts, Rhineland-Palatinate, Germany. © Rob Lavinsky, www.iRocks.com. Used with permission.
Article: What are Crystal Systems and Mineral Habits?
Credit: www.iRocks.com
| Gemstone | Quartz, Chalcedony, Agate |
| Natural or man made | Natural |
| Origin | Germany |
| Origin details | Juchem Quarry, Niederworresbach, Idar-Oberstein, Hunsruck Mts, Rhineland-Palatinate |
| Gem State | Other |
| Color | Brown |
| Transparency | Opaque |