Football agate is a variety of chalcedony formed when silica-rich fluids fill cavities within volcanic rock. Variations in mineral content during formation create contrasting bands, inclusions, and occasional crystal-lined openings that remain visible after polishing.
This polished football agate sphere displays deep gray chalcedony accented by striking red mineral inclusions and multiple natural druzy-lined cavities. Areas of translucent agate reveal subtle internal banding, while exposed crystal pockets add texture and depth across the surface. Under ultraviolet light, portions of the agate fluoresce a vivid green, highlighting internal structures not readily visible under normal lighting.
Selected for its strong color contrast, natural crystal exposure, and UV-reactive character, this specimen presents a distinctly geological appearance from every angle.
Details:
Football agate
Approx. 3.2" diameter
Polished sphere
UV reactive (green fluorescence)
Natural druzy cavities and internal features present
Natural variations in color, banding, and mineral inclusions
Acrylic display stand included
A substantial display specimen well suited for a cabinet of curiosities, mineral collection, or ultraviolet mineral display.
You will receive the exact piece shown.
Football Agate Sphere (UV Reactive) | Polished Specimen | 3.2"
Orders ship at a flat rate of $8 within the United States, with free U.S. shipping on orders over $50 (before tax). Due to the delicate and one-of-a-kind nature of curated specimens, returns and exchanges are not accepted. For full details on sourcing, care, and policies, see Notes from the Cabinet.