Terrazzo

Terrazzo: "a mosaic floor of paving composed of chips of broken stone, usually marble, and cement, polished when in place." Random House Dictionary.

Uh-oh. I shouldn't have looked up the definition before I named this background. This floor is certainly not composed of broken stone, but the effect of the striated cream and aquamarine diamonds is stunning, nevertheless.

Another classic Prom background, illustrating a most successful three-dimensional effect. The brown stones in the patio, which appear to trail off into the distance, don't. And the fountain doesn't flow, and the stars don't shine. But try to tell that to your clients, who won't believe their eyes.