Presenting a stunning and exceptionally rare natural specimen of chalcanthite on sandstone from the Lubin Mine in Poland. This piece showcases the vibrant blue crystals of chalcanthite, beautifully contrasted against the natural sandstone matrix. Chalcanthite, known for its striking azure color, is highly sought-after among collectors, and finding it in such natural, unaltered form is particularly rare. The crystals on this specimen are well-formed and display excellent luster, making it a standout piece in any mineral collection. Originating from one of Poland's most famous mining regions, this chalcanthite specimen is both visually captivating and rich in geological significance. Don't miss the opportunity to own this remarkable and rare natural mineral specimen from Lubin Mine.