Know all about Tonalite and Diorite properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite and Diorite belong to Igneous Rocks.Texture of Tonalite is Phaneritic whereas that of Diorite is Phaneritic. Tonalite appears Banded and Foilated and Diorite appears Shiny. The luster of Tonalite is subvitreous to dull while that of Diorite is shiny. Tonalite and Diorite are available in black, brown, light to dark grey, white colors. The commercial uses of Tonalite are cemetery markers, creating artwork and that of Diorite are creating artwork, curling.