Pyrite – Navajún, La Rioja, Spain

 Sharp-edged, highly lustrous, golden-yellow pyrite crystals with edge lengths of up to 3.9 cm form a highly aesthetic group of three intergrown pyrite cubes. Such superb specimens with intergrown crystals are rarely offered for sale, despite their large occurrence.
 A real eye-catcher and an outstanding collector's item from this famous site in Spain.