Pyrite - Gachalá mining district, Colombia - 37mm x 36 mm x 35mm
Mineral: Pyrite
Locality: Gachalá mining district, Municipio Gachalá, Eastern Emerald Belt, Cundinamarca Department, Colombia
Dimensions: 37mm x 36 mm x 35mm

Description: Two intergrown pyritohedrons forming an "iron cross" twin. It is practically a 36 mm diameter sphere.