1.55" Fluorite Octahedron (Chalcopyrite Inclusions) - Illinois

This is a beautiful, light yellow, cleaved & polished fluorite octahedron collected from Hardin County, Illinois. It's full of glimmering Chalcopyrite inclusions.

Miners used to cleave these octahedrons out of the high-grade fluorite in the mines. They were common in the 50's and 60's when the mines were operating in full swing, but are very hard to find acquire anymore.