Almandine is a type of garnet, a group of silicate minerals known for their beautiful colors and crystal forms. It is typically deep red to reddish-brown and is often found in metamorphic rocks. Almandine is commonly used in jewelry and as an abrasive material due to its hardness. This mineral has a chemical composition of Fe_3Al_2Si_3O_12, which means it contains iron and aluminum. Almandine is often associated with other minerals like biotite and quartz, and it can be found in various locations around the world, including Brazil, India, and the United States.