... decoration and floor tiles 4.Free sample can be send black mosaic wall tiles Mosaic slate,meshed mosaic tile,Mosaic slate ... .5x30.5x(1-1.2cm)3.Color ;white, yellow , rusty , black, green , grey and so on .4.Shape: Irregular , square, round ... -decorative materials. 6 . Characteristics; First, the cost is relatively cheap; Second, the radioactivity is very small (or even smaller) than the ...