QUESTIONi have fixed 4" black marble on the corners of the room but unable to get shine of that marble after polishing. how to get shine of those pieces.
ANSWERANSWER - Assuming when you say marble that it is a true calcium carbonate marble you can buy kits with diamond pads and a powder compound with water to re-polish a marble that has scratches and stains. Marbles are much more sensitive to scratching and to etching from acidic substances, and require re-polishing from time to time.
If you have a granite or quartzite then you need to use just the diamond pads with water. There are a series of diamond pads that you use in sequence from very abrasive to lightly abrasive like sand paper.
There are professional stone restoration companies who specialize in restoring stone floors.