Détails du produit

One-of-a-kind natural agate. You will receive a piece similar to those shown. Size: 3 to 6 inches (sizes vary) Agate is a banded variety of chalcedony, a microcrystalline form of quartz. It forms in cavities within volcanic or metamorphic rock as silica-rich fluids deposit layers over time. Its wide range of colors comes from trace minerals such as iron, manganese, and other inclusions during formation. These bookends typically display distinct banding, layered patterns, and may include druzy quartz pockets or polished faces with a natural outer rind. Each item is unique in shape, color, and pattern. Higher-grade pieces are selected first. Photos represent overall quality and appearance.