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