Pseudomorph Goethite After Marcasite | Prophecy Stone | 31 gr | Farafra Oasis, Egypt | SO24 H6 Color: Fine Dark Gray with

Color: Fine Dark Gray with Rainbow Luster

Placing Agate slices or decor in areas like bedrooms

Shape: Carved Leaf Briolette

This is a fabulous 8

Dimensions:  81x67x67   mm / 3

Pseudomorph Goethite After Marcasite | Prophecy Stone | 31 gr | Farafra Oasis, Egypt | SO24 H6 Color: Fine Dark Gray withChoose your Pseudomorph! Pseudomorphs 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,