An EXCELLENT and showy combination specimen from Bulgaria dominated by lustrous, striated, gun-metal gray chalcopyrite crystals to 1.9 cm with transparent, needle quartz crystals, scattered pyrite and sphalerite crystals and a single, flattened calcite rhomb. Very trivial damage, overall, with only a couple points of attachment. Note old Museum label from an Eastern European institution 6.5 x 5.8 x 4.8 cm