The average cost of dunite per ton ranges from $80.00-120.00. It is the parent rock of magnesite. It is dark grey to olive green in color. It is an igneous, plutonic rock with coarse-grained texture. It is considered the major constituent of earth’s mantle. Dunite is used in certain industries to produce refractory bricks. It is also used as a flux material in steel plants and in forging industries in powder form replacing silica sand.