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