Rounds mesh-mounted mosaic natural stone mosaic tile has random pieces of marble or basalt that have been shaped into perfect penny-shaped pieces and then mounted on a mesh backing. The sheets are designed to interlock for easy installation and a seamless appearance. These tiles are perfect for a variety of design schemes, including kitchens and bathrooms. Inspect all tiles before installation. Natural stone products inherently lack uniformity and are subject to variation in color, shade, finish, etc. It is recommended to blend tiles from different boxes when installing. Natural stones may have characteristics that may include pitting. All-natural stone products should be sealed with a penetrating sealer.