Know all about Felsite and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Felsite belongs to Igneous Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Felsite is Arborescent Patterned, Vitreous whereas that of Itacolumite is Clastic, Granular, Rough. Felsite appears Layered, Banded, Veined and Shiny and Itacolumite appears Rough. The luster of Felsite is vitreous while that of Itacolumite is dull. Felsite is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Itacolumite is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Felsite are mirror, jewelry and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.