Marvelous and unusual Sphalerite with skeletal structure and Chalcopyrite incrustations above. Displays black Sphalerite crystals with superb luster and complex, stepped faces that form attractive structure. It has excellent parallel striations. On the surface are grown yellow Chalcopyrites. They enrich nicely the display. The specimen is complete all over. In excellent condition – some nicks.

Beautiful and neat!