Herkimer Diamond.  Treasure Mt. Mine, Fall Hill, Little Falls, New York.  This is a large Herk for the location.  It measures 8.2 x 6 x 4.6 cm and is on a small piece of dolostone matrix.  The dolostone is encrusted with small whitish pink dolomite crystals.  It has a couple isolated tiny chips on a lower edge that are not distracting from the overall high quality of the piece.  An excellent example for this price!  $150