These are simply the finest, most logically designed and organized rock and mineral specimen displays anywhere. Each is brilliantly designed and detailed in a way that helps young geologists understand the mysteries of rocks and minerals. Framed in oak, these 18" x 24" displays are essential to any earth study science center. You will be dazzled by the quality of these four displays, which identify and investigate Sedimentary Rocks, Metamorphic Rocks, Igneous Rocks, and Minerals.