Granite: Igneous Rock Pictures, Definition amp; More
quot;Granitequot;: All of the rocks above would be called quot;granitequot; in the commercial stone industry. Clockwise from top left they are: granite, gneiss, pegmatite, and labradorite. Click on any of their names above for an enlarged view. Each of the images above represents a slab of polished rock about eight inches across.