Natural pebble from river. Polished surface. Fit for decorating ground and wall, and similar landscaping. Colour and features: Black with polished face. Many pebbles are pre-assembled onto a mesh/mat, then customer can install those mats on ground. Each mat is 30X30cmaround 1cm thick. They can be used for Landscaping. You can use them in your garden, park, or floor.Packaging:11 pieces to 1 carton ...