Know all about Siltstone and Teschenite properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone belongs to Sedimentary Rocks while Teschenite belongs to Igneous Rocks.Texture of Siltstone is Clastic whereas that of Teschenite is Phaneritic. Siltstone appears Rough and Teschenite appears Veined and Shiny. The luster of Siltstone is dull while that of Teschenite is not available. Siltstone is available in brown, red, reddish brown colors whereas Teschenite is available in dark grey to black colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Teschenite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.