Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Foidolite and Harzburgite. Texture of Foidolite is Earthy whereas that of Harzburgite is Phaneritic. Based on the texture of rocks, they are used for various purposes. Get detailed information about Foidolite vs Harzburgite texture, color, appearance and maintenance in the next section.