Blue Cleft Glass & Bianco Marble Mosaic Tile - Blue & White 1"x2" Glass Tile Type: Glass & Stone Thickness: 3/8" (8mm) --- Grout Joint: 3/16" Color: BLUE ----- Finish: Glossy & Cleft (Glass), Polished (Marble) Sheet Size: 11 3/4" x 12 3/4" (is about 1 square feet) Tile Size: 7/8" x 1 7/8"