I did it, came out great. it was at my own house, it is brown marble countertop in the mast bath, it was real bad. I used stone scrub with a fiber pad to remove the soap, then I put on a diamond pad very fine than I used a polish compound that I bought at a supply place, then I used a stone sealer and color enhancer, then I wax it with car polish. look like brand new. did I do it right. John G. I known you do a lot of that stuff, would love to hear you opinion.