The museum exhibits granite monuments made from Missouri Red Granite. They are carved and engraved out of various types of marble and granite. They are built of limestone, granite, and Rosendale cement. Eritrea has an extensive amount of resources such as copper, gold, granite, marble, and potash. He covered the walls with huge slabs of African red granite. Other areas saw extensive use of limestone, granite and flint. They are built of granite and sandstone. The underground resources include gold, zinc, copper, fluorspar, limestone, granite, and kaolin. Quartz sand that is recently weathered from granite or gneiss quartz crystals will be angular. Buildings were made of granite and brick. These are due to the granite and slate that underlie the area. It is also a major producer of quarry granite and ceramics. They primarily consist of metamorphic gneiss, granite, and schist. They consist primarily of metamorphic gneiss, granite, and schist. The Graafwater rocks rest on the basement consisting of Cape Granite.