Know all about Nephelinite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite and Icelandite belong to Igneous Rocks.Texture of Nephelinite is Aphanitic whereas that of Icelandite is Aphanitic to Porphyritic. Nephelinite appears Skeletal and Icelandite appears Dull and Soft. The luster of Nephelinite is vitreous to metallic while that of Icelandite is vitreous. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Icelandite are cemetery markers, creating artwork.