Set of mineral species, a matrix of iridescent chalcopyrite, one side covered with white dolomite, and the other side covered with pentadodecahedral transparent calcite crystals. and a tiny set of vesuvianite crystals peeking out.
Semi-sphere of white lustrous calcite among scalenohedral calcite crystals covering galena matrix.
Very lustrous pyrite crystals, pyritohedron shape (pentadodecahedron). embedded on white scalenohedral white pointed calcite crystals, on quartz matrix
Opal with play of colors, embedded in its rhyolite cantera matrix
