Know all about Scoria and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Scoria and Trachyte belong to Igneous Rocks.Texture of Scoria is Vesicular whereas that of Trachyte is Aphanitic to Porphyritic. Scoria appears Glassy and Vesicular and Trachyte appears Banded. The luster of Scoria is subvitreous to dull while that of Trachyte is metallic. Scoria is available in black, brown, dark grey to black, red colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white 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 Trachyte are cemetery markers, creating artwork.