Natural Aragonite crystal stone very cool cheapest colour gemstones pendant making

natural Aragonite stone gemstones
stone colour: brown
stone shape:fancy
Definition. Aragonite is a mineral comprising calcium carbonate (CaCO3), it is polymorphous to calcite, meaning that they both contain the same main elements but have different crystal structures. Aragonite forms cheapest orthorhombic crystals, whereas calcite is trigonal.