Amethyst, pyrite

One excellent cabinet size specimen of parallel developed dark amethyst crystals covered by well terminated lustrous pyrite crystals.

Rainbow pyrite with quartz

One very nice , cabinet size specimen of well terminated cubic pyrite crystals, covered by quartz strongly oxidated to bornite in some parts of the specimen.

Quartz coated by limonite

One exceptionally aesthetic,  large cabinet size specimen, of well developed quartz crystals secondary coated by limonite.

Amethyst with pyrite

An excellent and aesthetic cabinet size specimen build in light amethyst crystals covered by very lustrous pyrite

Chalcopyrite, sphalerite-marmatite, quartz and calcite

A very nice specimen of very well shaped chalcopyrite crystals, with striated crystal faces and covered by lustrous black sphalerite with thetrahedron vicinality signs on the surface. In the end of the crystallization process were formed quartz and calcite crystals.