Wave mosaic design Persian mosaic is one of those mosaics that has obtained its density through pressure or press. Unlike single-layer vibrating mosaics, pressed mosaics consist of different layers: 1- The surface layer or mosaic color: This layer includes colored aggregates, cement and paint, and in fact, the color and design of Persian mosaic depends on this layer. 2- Bottom or sub-layer mosaic: This layer is composed of sand, sand and cement (actually a concrete with a low slump).                   Soon