Know all about Siltstone and Websterite properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone belongs to Sedimentary Rocks while Websterite belongs to Igneous Rocks.Texture of Siltstone is Clastic whereas that of Websterite is Clastic, Granular, Phaneritic, Porphyritic. Siltstone appears Rough and Websterite appears Layered, Banded, Veined and Shiny. The luster of Siltstone is dull while that of Websterite is dull to vitreous to submetallic. Siltstone is available in brown, red, reddish brown colors whereas Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.