Know all about Quartzite and Claystone properties here. All properties of rocks are important as they define the type of rock and its application. Quartzite belongs to Metamorphic Rocks while Claystone belongs to Sedimentary Rocks.Texture of Quartzite is Foliated, Granular whereas that of Claystone is Clastic. Quartzite appears Lustrous and Claystone appears Rough and Dull. The luster of Quartzite is vitreous while that of Claystone is dull. Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors whereas Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Quartzite are an oil and gas reservoir, as armour rock for sea walls, cemetery markers, commemorative tablets, in aquifers, laboratory bench tops, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums and that of Claystone are pottery.