Rust stains on natural stone are among the most stubborn and visually alarming discolorations a stone surface can develop. Those orange, brown, or yellow streaks and spots are unmistakable — and they ...

Some stains on stone countertops and floors can't be removed by simply wiping or mopping. When a liquid has been absorbed into the stone's pores — cooking oil, red wine, coffee, ink, or dark juices — ...