Fluorite Octahedron, Rosiclare Level, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Ron Roberts Collection, Miniature approx. 3+ cm on edge, 4+ cm point to point, $125. Online September 15.
Beautiful, transparent purplish blue octahedron with hint of yellow. Thin veil-like inclusions add great visual appeal as do a few scattered chalcopyrite inclusions. Diamond shows three original crystal faces. Polishing grade. Weight 69g.