Wulfenite    Sierra de los Lamentos, Chihuahua, Mexico.  Ex. Dr. Steve Chamberlain Collection, prev. Dr. George Robinson.  This is my favorite specimen of this bunch of wulfenites.  A 1.2 cm gem crystal sits up high off the matrix and couldn’t possibly display any better than this.  There is a pin head sized mark (visible with magnification) which does not draw any attention.  Amazing impact for a TN specimen.  From one of the most important North American mineralogical discoveries ever, written about in numerous books and periodicals.  Overall size of the piece is 2.5 x 2.4 x 1.9 cm.  An important specimen in need of a place in a top TN collection.    495$ on sale for $297