Know all about Picrite and Blue Granite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite and Blue Granite belong to Igneous Rocks.Texture of Picrite is Earthy, Rough whereas that of Blue Granite is Phaneritic. Picrite appears Rough and Shiny and Blue Granite appears Shiny. The luster of Picrite and Blue Granite is subvitreous to dull. Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors whereas Blue Granite is available in black, brown, light to dark grey, white colors. The commercial uses of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo) and that of Blue Granite are cemetery markers, commemorative tablets, creating artwork, curling.