Polished Fossil Coral - Morocco - polished fossils 8.3 cm / 274g / AX146

Coral belongs to the carbonate group. It primarily contains carbon and calcium. In this case, its chemical formula is the same as calcite or aragonite. Corals are skeletal and generally occur in branching forms. Coral is most often creamy white and is considered precious when it is red, pink, blue, or black.