Know all about Icelandite and Syenite properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite and Syenite belong to Igneous Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Syenite is Earthy. Icelandite appears Dull and Soft and Syenite appears Banded and Foilated. The luster of Icelandite is vitreous while that of Syenite is subvitreous to dull. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Syenite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Icelandite and Syenite are cemetery markers, creating artwork.