Know all about Quartzite and Diorite properties here. All properties of rocks are important as they define the type of rock and its application. Quartzite belongs to Metamorphic Rocks while Diorite belongs to Igneous Rocks.Texture of Quartzite is Foliated, Granular whereas that of Diorite is Phaneritic. Quartzite appears Lustrous and Diorite appears Shiny. The luster of Quartzite is vitreous while that of Diorite is shiny. Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors whereas Diorite is available in black, brown, light to dark grey, white colors. The commercial uses of Quartzite are an oil and gas reservoir, as armour rock for sea walls, cemetery markers, commemorative tablets, in aquifers, laboratory bench tops, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums and that of Diorite are creating artwork, curling.