Know all about Siltstone and Migmatite properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone belongs to Sedimentary Rocks while Migmatite belongs to Metamorphic Rocks.Texture of Siltstone is Clastic whereas that of Migmatite is Foliated. Siltstone appears Rough and Migmatite appears Dull, Banded and Foilated. The luster of Siltstone is dull while that of Migmatite is dull to pearly to subvitreous. Siltstone is available in brown, red, reddish brown colors whereas Migmatite is available in black, bluish - grey, brown, brown- black, dark greenish - grey, dark grey to black colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Migmatite are cemetery markers, jewelry, tombstones, used to manufracture paperweights and bookends.