Chalcedony (Var: Agate), Quartz
Horní Halže, Měděnec, Chomutov District, Ústí nad Labem Region, Czech Republic
Typical Horní Halže agate. One can see three interesting patterns, rounded triangles, one to the top, a large one with a bright center to the left, and a small one to the lower right. The angles and shapes of the three triangles are very similar and look much like cross sections of scalenohedral calcite. The pattern might have developed around ...
© Amir Akhavan