Know all about Claystone and Phonolite properties here. All properties of rocks are important as they define the type of rock and its application. Claystone belongs to Sedimentary Rocks while Phonolite belongs to Igneous Rocks.Texture of Claystone is Clastic whereas that of Phonolite is Granular. Claystone appears Rough and Dull and Phonolite appears Banded and Foilated. The luster of Claystone is dull while that of Phonolite is greasy to dull. Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors whereas Phonolite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Claystone are pottery and that of Phonolite are cemetery markers, creating artwork.