Chalcopyrite – Iridescent Tarnish – Dexing City, Jiangxi, China

Discover the vibrant energy of iridescent chalcopyrite crystals sourced from Dexing City, Jiangxi Province, China. Chalcopyrite (CuFeS₂) crystallizes in the tetragonal system and is known for its distinctive brassy yellow color, often exhibiting a striking iridescent tarnish that ranges from blues and purples to greens and reds. This specimen features well-formed, metallic luster crystals with complex, layered surfaces that catch the light beautifully, making it an engaging display piece for mineral collectors and geology enthusiasts alike.

The Dexing region is renowned for its rich mineral deposits, particularly copper ores, making it a notable locality for quality chalcopyrite specimens. With a Mohs hardness of 3.5 to 4, chalcopyrite is relatively soft and should be handled with care to avoid scratching or damage. This approximately 80-gram specimen measures about 55 by 32 by 38 millimeters, offering a compact yet visually impressive example of this collector’s gem.

Its combination of vivid iridescence and well-defined crystal habits adds to its desirability among collectors. When displaying or storing, avoid prolonged exposure to moisture and handle gently to preserve its natural luster and structural integrity.

Jiangxi Province, China — major source of barite, fluorite, and tungsten minerals.