An extraordinary specimen of clear- rock crystal quartz, with several well-presented Japanese law twins. In the late stages of the crystallization process, were developed several groups of gold color groups of needle celestine crystals
An excellent small specimen of galena, with very lustrous and shiny faces. Crystals are developed in the cubic shape. Galena crystalize on the back side of tectonically broken quartz and reconstructed older galena generation.In the last stage of development there are signs of „desolvation waves“
An attractive specimen of well-terminated pyrite with very lustrous crystal faces, singenetically developed with transparent quartz – rock crystal and followed by sphalerite and galena.
A specimen of shiny small galena and sphalerite crystals, followed by bigger pyrite crystals, particularly oxidated and coated by bornite. All these minerals are covered by extremely shiny, long-axes, needle quartz crystals, very well space developed and forming a set of crystals
An excellent double-terminated scalenohedron calcite crystal build by the alternation of calcite and calcite aggregates.
A very attractive specimen, presenting very well space developed long-axes transparent needle quartz, covering sphalerite, galena, and pyrite crystals
A unique for Bulgaria specimen presenting space developed transparent quartz – rock crystal with very well terminated shiny pyrite crystals coated by iridiscenting bornite and covellite as result of oxidation of , most likely coating of chalcopyrite
The most attractive, cabinet size specimen of emerald color sphalerite -cleophane from Androvo mine. The strong colored transparent crystals are developed on the top and between long-axes quartz crystals.
A beautiful specimen presenting well-terminated galena cubic crystals, covered by chalcopyrite and sphalerite-marmatite with green quartz on the top.
A large cabinet size specimen, presenting almost full paragenesis of Madan with very complicated mineralization process. Pseudomorph of pyrite after chalcopyrite, on the top of small galena crystals, followed by quartz and small sphalerite (cleophane) crystals