Know all about Trondhjemite and Gabbro properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite and Gabbro belong to Igneous Rocks.Texture of Trondhjemite is Phaneritic whereas that of Gabbro is Phaneritic. Trondhjemite appears Banded and Foilated and Gabbro appears Veined and Shiny. The luster of Trondhjemite is subvitreous to dull while that of Gabbro is not available. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Gabbro is available in dark grey to black colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.