Chalcopyrite on Quartz from Krushev dol Mine, Madan Municipality, Smolyan Province, Bulgaria. An elegant and eye-catching Chalcopyrite specimen from the famous Krushev Dol Mine in Bulgaria’s celebrated Madan mining district. Brilliant metallic Chalcopyrite crystals are beautifully perched on a sparkling Quartz matrix, creating a striking contrast between the warm golden tones of the sulfide mineral and the bright crystalline backdrop. The Chalcopyrite exhibits excellent luster with subtle metallic highlights that shimmer under changing light, while the Quartz provides both aesthetic balance and attractive crystal texture. The overall composition is clean, well-proportioned, and highly displayable from multiple angles. Madan specimens are highly regarded among collectors for their exceptional sulfide mineralization and classic associations, and this piece is a fine example of the locality’s renowned output. An attractive addition for collectors of Bulgarian minerals, sulfides, or elegant cabinet-display specimens.