After Pyrite is pseudomorph Pyrite, meaning the surface has been replaced with Goethite. “Iron-cross twins” are twinned crystals displaying the types of two pentagonal dodecahedra. These twins show edges crossing at 90 degrees, and in a classic twin, these edges structure a cross. Mined in Peru.
Weight: 30g-85g
Dimensions: 1"-1.5"
