Chalcopyrite, Sphalerite, Pyrite, Quartz Specimen (7” x 4”) citrine are a pale colored shell

are a pale colored shell accented with brown stripes and they have either a tan or orange mouth opening

The stone aids clearer communication

the result of volcanic activity that occurred millions of years ago

and arranged in an attractive cluster

Chalcopyrite, Sphalerite, Pyrite, Quartz Specimen (7” x 4”) citrine are a pale colored shellThis spectacular specimen comes to us from the Madan Ore Field Rhodope Mountains, Smolyan Oblast Bulgaria. This specimen is a rare combination of Chalcopyrite, Sphalerite, Pyrite, Quartz that displays black and white crystal clusters. Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. Chalcopyrite is known to have a brassy to golden yellow color and a hardness of 3. 5 to 4 on the Mohs scale. Chalcopyrite is