Know all about Slate and Granulite properties here. All properties of rocks are important as they define the type of rock and its application. Slate and Granulite belong to Metamorphic Rocks.Texture of Slate is Foliated whereas that of Granulite is Granoblastic. Slate appears Dull and Granulite appears Veined or Pebbled. The luster of Slate is dull while that of Granulite is vitreous. Slate and Granulite are available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors. The commercial uses 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 and that of Granulite are curling, gemstone, laboratory bench tops, soil conditioner, tombstones.