Granite is a types of felsic intrusive igneous rock that is granular and phaneritic in texture. Granite is being Crush into Different Diameters for the purpose of Aggregate in Concrete. The size range of various coarse aggregates given below: Fine gravel: 4mm 8mm Medium gravel: 8mm 16mm Coarse gravel: 16mm 64mm Cobbles: 64mm 256mm Boulders: > 256mm