This astonishing specimen from Navajún, Spain features two completely natural pyrite cubes growing out of a basalt matrix. The larger cube measures 1-1/2″ in diameter and both feature near-geometrically perfect lines and angles and mirror-like luster. While most pyrite forms a cubic habit, Spanish pyrite is particularly known for the isolation of its crystals. This natural art piece will enrich your collection and shine on your shelf.