Fluorescent Volcano Agate Cubes – Geometric Glow, Grounded Energy These hand-carved cubes are crafted from naturally fluorescent Volcano Agate, a rare volcanic chalcedony that combines bold texture with subtle sophistication. In daylight, each cube reveals moody bands of gray, cream, and charcoal—natural volcanic patterns that evoke cooled lava flows and ancient Earth energy. But under 365 nm UV light, they light up—literally. ⚡ These cubes fluoresce with a vivid green glow, making them a powerful visual anchor in any display. Their cube shape and unexpected fluorescence make them highly giftable, collectible, and perfect for customers drawn to unique geological specimens or modern crystal aesthetics. While they appeal to collectors and metaphysical shoppers alike, their UV-reactive nature makes them especially ideal for curated shelves, gemstone grids, and science-themed displays.