Copper on Prehnite
Iroquois Mine, Mohawk, Keweenaw Co., Michigan, USA
Thumbnail, 2.5 x 1.2 x 1.2 cm
Ex. Shields and Frances Flynn

A unique copper thumbnail specimen, and simply mesmerizing in person. I am not sure if there are bigger examples out there, but I cannot imagine better, with such a balanced cluster of copper "wires" poised on the prehnite matrix. This is a full-sized and competitive thumbnail showcasing copper in a style that we normally do not see in specimens. It is unique, in a world where many copper thumbnails look too much the same, admittedly.