ONYX NATURAL STONE SLABS & TILE Onyx is a beautiful fine-quartz material that seems to retain an almost watery glow when cut both thin and thick. It starts out naturally as quartz, but over time, heat and pressure fuse the quartz stones together to create this intricate, yet wondrous stone. Onyx can be used for flooring in offices, or commercial retail décor. Often times, onyx materials are backlit, bringing an elusive and captivating light to an entire room or entrance. Nikfar Group offers a variety of onyx, adding a natural elegance to your next construction or remodeling project.