Chalcopyrite Rough Gemstone Crystal

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Chalcopyrite is a brass-yellow mineral with a chemical composition of CuFeS2. It occurs in most sulfide mineral deposits throughout the world and has been the most important ore of copper for thousands of years. The surface of chalcopyrite loses its metallic luster and brass-yellow color upon weathering. It tarnishes to a dull, gray-green color, but in the presence of acids the tarnish can develop a red to blue to purple iridescence. The iridescent colors of weathered chalcopyrite attract attention. The most obvious physical properties of chalcopyrite are its brassy yellow color, metallic luster, and high specific gravity. These give it a similar appearance to pyrite and gold. Distinguishing these minerals is easy. Chalcopyrite is brittle and has a greenish gray streak and is easily scratched with a nail. Therefore, this stone is also a beneficial grounding stone. CHALCOPYRITE tends to look “dirty” and has this habit of shedding dust. So, it is recommended to rinse it under running water before using it for any healing purposes. 1 inch to 2 1/2 inches +/- in diameter. Show more