Abstract: A pearlized plastics mosaic article having a ceramic glaze thereover is made in a mold having a deep etched pattern of engravings to provide a relief casting having a pattern of grooves simulating the look of mosaic tiles. An ornamental mosaic finish is obtained by casting mosaic and background layers of thermoset materials. For contrast and definition of the mosaic ornamentation, the thermoset layers are cast of materials having different color pigmentations and material textures. In the molding process, the first thermoset layer is cast to a depth which is less than the height of mold engravings. After curing the first layer to a gel consistency, the second background layer of thermoset material is cast in overlying relation to the first thermoset layer and mold engravings. The thermoset materials are then cured and demolded to provide an integral mosaic casting.