Know all about Slate and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Rapakivi Granite belongs to Igneous Rocks.Texture of Slate is Foliated whereas that of Rapakivi Granite is Granular, Phaneritic. Slate appears Dull and Rapakivi Granite appears Veined or Pebbled. The luster of Slate is dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Rapakivi Granite is available in black, grey, orange, pink, white 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 Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.