A spinel twin Cuprite crystal which has partially pseudomorphed to small Copper crystals.
Condition: Good
Flaws: There is one area where the surface of the Cuprite is composed of conchoidal fracture planes which is much less noticeable than in some of the photos.
This mineral is also found in the following galleries: Minerals From Russia | Oxides and Hydroxides | Copper | Pseudomorphs | Minerals Priced Between 100 and 199 Dollars