The Art of Nature——Aragonite
Aragonite, named after Aragon, Spain, is composed mainly of calcium carbonate with manganese and iron. Despite its similarity to calcite, it is rarer in nature and less chemically stable, often converting into calcite. Both onyx and ammolite are aragonite-based gemstones, with onyx being used for decorative purposes, and ammolite admired for its vibrant colors and pattern distribution.