The MiR Mosaic DC Metro 11.8" x 11.8" Eastern White & Bianco Carrara Mosaic. Marble in Eastern White and Bianco Carrara have a timeless and refined appearance that may improve any area, be it a feature wall, kitchen backsplash, or bathroom. Because each tile is implied to be a square of that size by its 11.8" x 11.8" dimensions, installation is made easier and a consistent pattern can be produced. If you're thinking about using this mosaic for a project, be sure to carefully evaluate how you want to use its classic charm.