Know all about Theralite and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Trondhjemite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Trondhjemite is Phaneritic. Theralite appears Veined and Shiny and Trondhjemite appears Banded and Foilated. The luster of Theralite is waxy and dull while that of Trondhjemite is subvitreous to dull. Theralite is available in dark grey to black colors whereas Trondhjemite is available in black, brown, light to dark grey, white colors. The commercial uses of Theralite and Trondhjemite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.