Superb specimen of Cuprite crystals completely pseudomorphed by Copper. Displays two sharp octahedrons intergrown together. They have perfect shape and copper-brown color. Complete all over with penetration twinning. For references see the issue of The Mineralogical Record vol. 45, # 4, July-August 2014. In superb condition. On acrylic base.

Marvelous Copper pseudomorph!