Know all about Slate and Ijolite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Ijolite belongs to Igneous Rocks.Texture of Slate is Foliated whereas that of Ijolite is Earthy, Granular. Slate appears Dull and Ijolite appears Banded and Foilated. The luster of Slate is dull while that of Ijolite is greasy to dull. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Ijolite is available in brown, buff, cream, green, grey, 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 Ijolite are cemetery markers, creating artwork.