Old stock fluorite octahedron Cave-In-Rock

Natural Cleaved Fluorite Octahedron Blue Grey Cave-in-Rock Illinois Old Stock. This is a large naturally cleaved fluorite octahedron. Old stock from the 80’s. Bluish gray with a slight lavender tint in color with a pale green band inside. When the miners tapped on the fluorite at a certain point on the mineral the fluorite would break on the cleavage creating the octahedron shape. Cave-In-Rock District, Hardin Co., Illinois Approximately 1.8”x1.7”x1.4” Weighs 68.6g