This exceptional specimen features a singular, highly lustrous pyrite cube sourced from the world-famous deposits of Navajún, Spain. Celebrated by collectors for producing the finest geometric crystals in the world, this piece showcases a textbook isometric crystal system with sharp, well-defined 90-degree edges and flat, planar faces.

The crystal possesses an outstanding, highly reflective metallic luster with a uniform, classic brass-yellow coloration throughout. The surface displays fine, natural growth striations characteristic of unmanipulated, euhedral pyrite formations. The specimen is completely natural and free of artificial cutting or polishing; it retains minor organic micro-textures along its vertices, showing its untouched emergence from the local marl matrix.

• Mineral Species: Pyrite (Iron Disulfide, FeS₂)

• Locality: Victoria Mine, Navajún, La Rioja, Spain

• Dimensions: 1.4 x 1.3 cm (0.55 x 0.51 inches)

• Weight: 13 grams

• Form: Euhedral Single Crystal

Price € 25,—