Aura Agate Slice $20.00

Aura agate slices begin as natural agate, a banded form of microcrystalline quartz (SiO₂), and are treated with a thin metallic coating—often titanium or other vapor-deposited metals—to produce an iridescent, rainbow-like surface effect. While the color is enhanced, the underlying agate still displays its natural banding and internal structure. Features: Composition: Silicon dioxide (agate) with a thin metallic coating for color enhancement. Appearance: Translucent agate with natural banding patterns, overlaid with a shimmering, iridescent surface. Formation: Agate forms in volcanic rock cavities through rhythmic deposition of silica-rich fluids. The aura finish is added via a vacuum deposition process that bonds metal ions to the surface. Physical Properties: Hard and durable (Mohs 6.5–7), with a smooth, polished surface. Educational Value: Highlights both natural mineral formation and applied surface treatment techniques used in materials science. Aura agate slices are a