Size: 3 x 4 x 5 inches. Big crystal 3.5 inches across. This is a fine display specimen of calcite from the Blackstone Mine,Shullsburg, Lafayette County, Wisconsin. A large almost transparent calcite crystal sits up on a pedestal of smaller stepped crystals, in a partial scepter habit. The large crystal is completely choice, with smooth outer faces and more complex stepped back faces. Exhibits color zoning and opalescence. Ex Kenny Gay collection.