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