Know all about Granodiorite and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Granodiorite belongs to Igneous Rocks while Siltstone belongs to Sedimentary Rocks.Texture of Granodiorite is Granular, Phaneritic whereas that of Siltstone is Clastic. Granodiorite appears Veined or Pebbled and Siltstone appears Rough. The luster of Granodiorite is grainy, pearly and vitreous while that of Siltstone is dull. Granodiorite is available in black, grey, orange, pink, white colors whereas Siltstone is available in brown, red, reddish brown colors. The commercial uses of Granodiorite are curling, gemstone, laboratory bench tops, tombstones and that of Siltstone are raw material for the manufacture of mortar, soil conditioner.