Great specimen of galena crystals from the famous “Borieva” mine, from the great mining district of Madan (Bulgaria), which has been exploited since the middle ages. The main minerals obtained in this mining district are sphalerite, galena, chalcopyrite and pyrite. The Galena crystals are located in the main veins of the mine. In Madan there is one of the most significant manifestations of mineralization of Pb-Zn veins in the world. The largest deposits are related to six fault zones with lengths of up to 15 km and more. Mineral bodies are of three types: veins, carbonate replacement bodies and stockworks. This specimen is a clear example of the large pieces located in this mine, a beautiful piece of galena crystals, in which the metallic luster that is simply fantastic, the impressive stepped architectural structure and that some of the crystals of the pleasing have levels stand out Very thin and laminated on their faces that increase the interest of the piece. Galena, a sulfur of an isometric crystalline system and matt metallic gray color, of opaque crystals, low hardness and morphology that can be presented in the form of cubes, octahedra and rarely as dodecahedrons is one of the most appreciated sulfides among collectors, and this Sample is a good example of that.