Garnet – Ca₃Al₂Si₃O₁₂ – Grossular

The Garnet structure consists of linked AO₈, BO₄ and MO₆ polyhedra. A and B are usually di- and tri-positive cations. The 8 co-ordinate site can accommodate Lanthanide ions, such as Yttrium.

Garnet – Y₃Al₅O₁₂