Calcite crystals var. boytryoidal on Galena and Pyrite Matrix from Borieva Mine, Madan Municipality, Smolyan Province, Bulgaria. A captivating mineral specimen exhibiting smooth, globular botryoidal calcite crystals gracefully perched on a striking matrix of lustrous galena and sparkling pyrite. The rich contrast between creamy white calcite and metallic silver and gold hues of galena and pyrite creates a visually stunning display. The Borieva Mine in Madan Municipality, Smolyan Province, Bulgaria, is part of the famous Madan ore field known for its lead and zinc deposits. Mining in this region dates back to ancient times, with the Borieva Mine including several ore bodies like Petrovitsa and Yuzhna Petrovitsa. The mine has yielded notable mineral specimens, especially galena, sphalerite, pyrite, and quartz, making it well-regarded among mineral collectors. Historically, Madan and its mines contributed significantly to the local economy and remain key sources for world-class sulfide minerals.