Chalcopyrite on sparkling Quartz matrix from Cavnic Mine, Cavnic, Maramureș County, Romania. A captivating specimen featuring lustrous chalcopyrite crystals brilliantly perched atop a sparkling quartz matrix from the renowned Cavnic Mine, Cavnic, Maramureș County, Romania. The chalcopyrite displays its classic iridescent tarnish of blues, purples, and golds, contrasting beautifully with the clear, terminated quartz points. The Cavnic Mine is celebrated for producing world-class sulphide mineral combinations, and this piece exemplifies the locale’s quality with excellent crystal form and visual appeal. Such combinations of pyrite and chalcopyrite, occasionally with iridescent surfaces, are highly sought after by collectors for their vivid aesthetics and mineralogical significance. The Cavnic Mine in Maramureș County, Romania has not been operating since 2008, when all mines in the area were closed, the adits were sealed, and external infrastructure was demolished or is in the process of demolition.