Granite and Gneiss ; Granite bridge, Acadia National Park, Maine Granite and gneiss (pronounced “nice”) are crystalline igneous and metamorphic rocks composed of tightly interlocking crystals. They are generally the most durable of masonry stones. Pipestone GraniteFebruary 21, 2017 Black GrantiqueJuly 17, 2017 Atlas GraniteFebruary 21, 2017 Corinthian GraniteFebruary 21, 2017 Bridger GraniteFebruary 21, 2017 Selkirk GraniteFebruary 21, 2017