Pyrite Twin “Iron Cross” – Gachalá, Cundinamarca, Colombia
 
Rare pyrite floater crystal that exhibits the classic twinning known as the Iron Cross.
The pyrite crystal has a thin, brilliant metallic luster of goethite on the surface and sharp, complex surfaces!!!
The Pyrite Iron Cross Twins from Colombia are exceptionally large and unique.
"Iron cross twins" are twin crystals that have the shape of two pentagonal dodecahedra (also called pyritohedra). These twins have edges that cross at 90 degrees, forming a cross. 
The Iron Cross Twin Law is well known and demonstrated in specimens from various localities, but complete crystals of good size are rarely found. This remarkable specimen comes from a find in 2018.
Excellent iron cross twin.