👉 Apatite is a mineral in the group of minerals called silicates, which are found in various rocks and other materials. It is primarily composed of calcium carbonate (CaCO3), which forms when water dissolves calcium ions (Ca2+) and carbon dioxide molecules (CO2). Apatites typically have a smooth surface and are often used as decorative elements in jewelry. Apatite is known for its unique appearance, with its dark blue to grayish-blue coloration due to the presence