Workings in Estatoby. J. Gajowniczek photo.
Some of the pegmatites in the areaare very rich in gem crystals what hasresulted in extensive prospecting andmining. The most famous mineralsoccurring in them are certainly tourmalinesforming multi-colored, gemmy, lustrousand well-terminated crystals. Theother varieties of colored tourmalinessuch as red, green, pink, blue, yellow andviolet are also well known from the area.