Calcite crystals on Quartz matrix from Krushev dol Mine, Madan Municipality, Smolyan Province, Bulgaria. A striking specimen from the renowned Krushev Dol Mine, featuring calcite crystals gracefully perched atop a bed of slender quartz crystals. Many of the quartz and calcite faces are accented by a natural coating, lending warm golden to rusty tones and adding dramatic visual contrast to the classic white minerals. 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.