Know all about Diorite and Slate properties here. All properties of rocks are important as they define the type of rock and its application. Diorite belongs to Igneous Rocks while Slate belongs to Metamorphic Rocks.Texture of Diorite is Phaneritic whereas that of Slate is Foliated. Diorite appears Shiny and Slate appears Dull. The luster of Diorite is shiny while that of Slate is dull. Diorite is available in black, brown, light to dark grey, white colors whereas Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors. The commercial uses of Diorite are creating artwork, curling and that of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates.