Polished Blue Agate Geode Slice with Concentric Bands and a Sparkling Quartz Druzy Concentric-Banded Geode Formation with a Glistening Crystal-Lined Inner Cavity - Height: 231 mm - Width: 136 mm- 1491 g - (1)

Blue agate geode slices are cross-sections of agate nodules that reveal concentric banded patterns of varying blue hues around a central cavity filled with sparkling quartz druze crystals. These polished slices illustrate the layered formation of agate through silica deposition over time within volcanic cavities, resulting in striking concentric bands. The glittering quartz druze lining inside the hollow cavity provides a natural sparkle contrasting with the smooth agate surface. Such geode slices are prized decorative objects, showcasing natural artistry and mineral formation processes. Their eye-catching patterns and colors make them popular for display, jewelry making, and as collectible specimens within mineral enthusiasts' collections.