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