SONIC BLACK SONIC BLACK Granite Black Brazil SONIC BLACK is a black colour granite from Brazil. Technical Information Values Volumetric Mass 3011 Kg/m3 Compression strenth 2663 Kg/cm2 Bending strength 278 Kg/cm2 Compression strength after freezing 2575 Kg/cm2 Imbibition Coefficient 0,2 % N. Slabs Available N. Blocks Available Request Information