Two wrongs may not make a right, but often the unrefined makes the refined. Take this kitchen, for example. The floor and eating bar are exposed concrete while bolted steel carries heavy timbers and crowns the cabinets. The countertop backsplash is a raw steel channel, in contrast with the shiny, granite countertops and finely crafted mahogany cabinets.
Something special is created from the juxtaposition of common and fine materials. By way of contrast, the unrefined materials make the refined materials appear even more so.