Sphalerite     Walworth Quarry, Walworth, New York.  This location may be known for its fluorites but on occasion an okay sphalerite is found.  This sphalerite is the finest I have seen from the location in any size (they really don't get much bigger than this anyways).  It measures 2.2 x 2 x 1.8 cm.  The single large crystal is very nicely colored, translucent/transparent, damage-free, and has a better than normal luster.  Tiny dolomite crystals enhance the specimen and yes, it is twinned.  The color and transparency are better in person and much better when properly lit.  Keep in mind that I only do low light point and click photography for these postings.  $500 on sale for $450