Used in the production of copper-based chemicals and as a raw material in the manufacturing of pigments for ceramics and glass, imparting dark black or brown colors. Employed in solar cells and capacitors due to its semiconductor properties, particularly in thin-film photovoltaic devices and with suitable conductivity in certain crystal forms. Acts as a catalyst in certain chemical reactions, especially oxidation in organic synthesis. Utilized in electroplating processes for copper sulfide layers in electronic or protective coatings. In mining, aids in separating copper from raw ore via froth flotation, given its occurrence as the mineral covellite. Found in mineral analysis and research settings. Also investigated for battery materials, conductive inks, and heavy metal absorption from wastewater due to effective metal ion binding.