Color: Intense Fine blue

The tourmaline end has a flat pinacoid and this green crystal has luster and translucence

Dimensions:  66x49x37mm / 2

60 g was found by Pete Meyers on May 18

molybdenite forms in high-temperature environments such as in igneous rocks

Pseudomorph Goethite After Marcasite | Prophecy Stone | 38 gr | Farafra Oasis, Egypt Calcite Color: Intense Fine bluePseudomorphs 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