PYRITE, Navajún, La Rioja, Spain
The crystal system is called isometric, or cubic, meaning that its smaller molecules form cubes. These specimens are roughly 130 millions years old. They are mined about 3 hours northeast of Madrid, in Navajún, La Rioja, Spain.
SPANISH PYRITE IS FAMOUS FOR ITS CUBIC SHAPE.
IT IS COMPLETELY NATURAL - NOT CUT OR POLISHED!