Shop for Flooring at The Home Depot. With its earthy brown coloration, crystalline glazing and uneven dimensions, the Merola Tile Cobble 12 in. x 12 in. Noce Ceramic Subway Mesh-Mounted Mosaic Tile offers the distinctive feel of a perfectly preserved artifact from days of old. This mosaic sheet incorporates subway-format tiles that are constructed from durable ceramic material and are arrayed in a staggered-brick pattern to add a touch of handmade charm to your living space. The semi-vitreous water absorption rating makes this mosaic suitable for indoor applications only.