CB14AL8: Aggregate of twinned disphenoidal (pseudotetrahedral) crystals of Chalcopyrite, with slight iridescence, on matrix.
The specimen from one of the most classic German localities for the species comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Herdorf, Siegerland, Rhineland-Palatinate/Rheinland-Pfalz  Germany

Specimen size: 3.4 × 2.4 × 1.9 cm = 1.34” × 0.94” × 0.75”

Main crystal size: 2.2 × 1.7 cm = 0.87” × 0.67”