Know all about Trachyandesite and Blue Granite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Blue Granite belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Blue Granite is Phaneritic. Trachyandesite appears Dull and Soft and Blue Granite appears Shiny. The luster of Trachyandesite is earthy while that of Blue Granite is subvitreous to dull. Trachyandesite is available in black, brown, light to dark grey colors whereas Blue Granite is available in black, brown, light to dark grey, white colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Blue Granite are cemetery markers, commemorative tablets, creating artwork, curling.