Know all about Scoria and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Greenschist belongs to Metamorphic Rocks.Texture of Scoria is Vesicular whereas that of Greenschist is Foliated, Platy. Scoria appears Glassy and Vesicular and Greenschist appears Layered and Shiny. The luster of Scoria is subvitreous to dull while that of Greenschist is shiny. Scoria is available in black, brown, dark grey to black, red colors whereas Greenschist is available in dark greenish - grey, green colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that of Greenschist are blackboards, manufacture of tools, writing slates.