Know all about Hornblendite and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Hornblendite belongs to Igneous Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Hornblendite is Banded, Foliated, Massive whereas that of Gritstone is Earthy. Hornblendite appears Foliated and Gritstone appears Layered and Foliated. The luster of Hornblendite is vitreous to dull while that of Gritstone is dull. Hornblendite is available in black, brown, green, grey colors whereas Gritstone 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 Hornblendite are cemetery markers, commemorative tablets, creating artwork and that of Gritstone are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo), tombstones.