Honing, polishing and grinding: what each one takes off.
Three words that get used interchangeably and mean three different depths. Knowing which one your floor needs is how you avoid paying for the wrong one.
Stone restoration is abrasion in stages. Each stage removes a different amount of stone and leaves a different surface, and a job might use one, two or all three. The order is always the same: grind, hone, polish.
Grinding
Coarse diamonds, the most removal. Grinding is for problems that are not on the surface but in the plane of the floor: tiles sitting at different heights (lippage), deep scratches from dragged furniture, worn paths from years of traffic, and thick old coatings. It flattens the floor so that the finer stages have an even surface to work with.
Because it removes the most material, it is specified after inspection and only where the fault demands it. Polishing a floor with lippage does not fix the lippage; it makes a set of uneven tiles shiny. Grinding first is what makes the rest of the job hold.
Honing
Progressively finer abrasives, a very thin layer removed. Honing is the corrective stage for surface damage: etch marks, light to moderate scratching, dull traffic lanes, uneven sheen. It leaves the stone smooth and matte to satin. On a floor that is meant to be honed, this is where the job ends. On a floor that is meant to be polished, it is the preparation.
Honing is what removes an etch mark. An etch is a change to the polished surface where an acid has reacted with the stone; wiping it does nothing because nothing is sitting on the stone. Honing takes the changed layer off evenly and leaves a fresh one. Deep gouges, cracks, chips and heavy staining need repair, filling or a poultice before honing can do its work.
Polishing
The finest abrasives and polishing compounds, almost no removal. Polishing refines a honed surface until it reflects. It is the right call on its own when the only problem is lost shine: a polished floor gone cloudy in the traffic lanes while the edges still reflect, a vanity with light marks and an otherwise intact surface. It cannot fix what it cannot reach; a scratch deeper than the polish is still there, just shinier.
The trade-off with a polished finish is that it shows more. It is not weaker than honed. It is more reflective, so every new mark is more visible. Where the finish should stop is a decision about the room, not the stone.
Which one your floor needs
Lost shine, surface intact: polish. Etching, light scratching, dull lanes: hone, then polish if that is the finish. Lippage, deep scratches, old coatings, heavy wear: grind, then hone, then polish. The least aggressive process that fully addresses the fault is the right one, and the way to know is to look at the floor, not the brochure.
Why the kits do not work
Most products sold as marble polish are cleaners, temporary shine enhancers or coatings. They do not remove an etch, flatten a scratch or even out a finish; some leave a film that holds dirt and wears unevenly. Abrasive pads and sanders are the bigger risk. Marble is softer than people expect, and the wrong grit or uneven pressure leaves swirl marks, dull patches and a border between the treated area and the rest. On a benchtop that is a hard blend. On a floor it turns a repair into a restoration.
After the abrasives
A restored surface is sealed with a penetrating sealer, which slows absorption and gives you time to wipe a spill. It does not make the stone acid-proof or scratch-proof. Daily care is a neutral cleaner, prompt attention to acidic spills, mats at the door and felt under furniture. For a building floor, planned periodic honing keeps the finish up and keeps grinding off the schedule.
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Related questions.
What is the difference between honed and polished, and which should I choose?
Polished is the mirror finish; honed is matte. Both are produced by the same abrasive sequence, stopped at different points. Polished shows the depth and colour of the stone at its best and reflects light, and it also shows etching and wear more readily. Honed hides small marks, gives a softer look, and is the usual choice for floors in busy houses and for travertine. Neither is more durable than the other in the stone itself; the difference is in how visible wear is. If you had polished and are tired of seeing every mark, honing is an option. If you had honed and want the depth back, polishing is the same work in the other direction. There is a middle setting as well. Stopping the sequence short of a full polish gives a low sheen that lifts the colour without becoming a mirror, which suits a kitchen where reflections of downlights are the thing people find tiring.
Can etched marble be restored, or does it need replacing?
Etched marble can be restored in place, and replacement is almost never the right answer. Etching is a thin layer of the polished surface dissolved by acid. It is not a stain and it does not go deep. The mark is honed off with diamond abrasives and the area is re-polished to match the rest of the top. On a benchtop that is usually a couple of hours of work, done on the bench with the kitchen protected. Deep etching that has left a visible dip takes more honing and blends less perfectly, and that is exactly the sort of case we cut a test patch for before committing. Replacing a benchtop means a new slab, templating, fabrication, removal, plumbing and a splashback, and weeks without a kitchen. Restoring it is a fraction of that.