Fluorescent Calcite (UV) crystals on Galena matrix from Krushev dol Mine, Madan Municipality, Smolyan Province, Bulgaria. A striking specimen featuring fluorescent calcite crystals perched on a galena matrix from the renowned Krushev dol Mine, Madan Municipality, Smolyan Province, Bulgaria. Under UV light, the calcite displays a vivid glow, creating a captivating visual contrast against the metallic luster of well-formed galena. Krushev Dol Mine, located in the famous Madan ore field, is celebrated for producing elegant calcite and quartz combinations with unique surface textures due to secondary mineralization. This piece perfectly captures both the region’s distinctive mineralogy and aesthetic flair, making it an outstanding display for collectors seeking classic Bulgarian specimens with added colour and character.