Know all about Trondhjemite and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite belongs to Igneous Rocks while Skarn belongs to Metamorphic Rocks.Texture of Trondhjemite is Phaneritic whereas that of Skarn is Earthy, Mud-rich, Rough. Trondhjemite appears Banded and Foilated and Skarn appears Dull. The luster of Trondhjemite is subvitreous to dull while that of Skarn is waxy and dull. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Skarn is available in black, brown, colourless, green, grey, white colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).