Pseudomorph Goethite After Marcasite | Prophecy Stone | 37.6 gr | Farafra Oasis, Egypt Elpidite These ultra rare crystals are

These ultra rare crystals are from the Polaris Mine

Origin: Russia

This is a good looking Gibeon classified meteorite etched cube weighing 12

Dimensions:  43x28x21  mm / 1

it is still one of the most powerful crystals

Pseudomorph Goethite After Marcasite | Prophecy Stone | 37.6 gr | Farafra Oasis, Egypt Elpidite These ultra rare crystals arePseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed