Know all about Siltstone and Serpentinite properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone belongs to Sedimentary Rocks while Serpentinite belongs to Metamorphic Rocks.Texture of Siltstone is Clastic whereas that of Serpentinite is Earthy. Siltstone appears Rough and Serpentinite appears Rough and Dull. The luster of Siltstone is dull while that of Serpentinite is waxy and dull. Siltstone is available in brown, red, reddish brown colors whereas Serpentinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Serpentinite are commemorative tablets, creating artwork.