Wulfenite    Sierra de los Lamentos, Chihuahua, Mexico.  Ex. Dr. Steve Chamberlain Collection, prev. Dr. George Robinson and exhibited at Burlington show, 2000.  A simply huge crystal which measures 3 cm on edge or 3.6 cm diagonally.  What is here is complete with only two very tiny chips (less than a millimeter each) on the back.  Amazing impact for a TN specimen.  From one of the most important North American mineralogical discoveries ever, written about in numerous books and periodicals.  An important specimen in need of a place in a top TN collection.    $550