Know all about Trondhjemite and Peridotite properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite and Peridotite belong to Igneous Rocks.Texture of Trondhjemite is Phaneritic whereas that of Peridotite is Phaneritic. Trondhjemite appears Banded and Foilated and Peridotite appears Rough and Shiny. The luster of Trondhjemite is subvitreous to dull while that of Peridotite is shiny. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Peridotite is available in dark greenish - grey colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.