Impressive large specimen featuring numerous well-terminated crystals of both calcite and pyrite. The calcite displays a clean, snow-white color with excellent luster, contrasting beautifully with the rich, golden metallic sheen of the pyrite matrix. The piece is visually strong and well balanced, with sharp crystal definition and a highly aesthetic overall composition. With its substantial size (667 grams) and striking color contrast, this is a standout specimen well suited for a serious mineral collection or as a prominent display piece.