Light scratches in marble buff out with marble polishing powder, the same product used for etch marks, worked over the area until the finish matches. Marble is soft — softer than granite, quartz and often softer than the unglazed foot ring of a dinner plate — so scratching is normal rather than a defect. Deep scratches you can catch a fingernail in need professional re-honing, because polishing one patch of a scratched surface leaves a visible bright spot rather than a repair.
Why marble scratches so readily
Marble is calcium carbonate. Acid dissolves calcium carbonate, and that reaction does not need the acid to soak in — it happens the moment the liquid touches the polished surface. This is why marble behaves so differently from granite or quartz, and why the fix for a dull mark is not a stronger cleaner.
Polishing out a light mark
- Clean and dry the area first — polishing grit into a dirty surface makes fine scratches.
- Dampen the mark with a little water.
- Sprinkle marble polishing powder over it.
- Work it with a damp cloth or felt pad in small circles, with light pressure, for a few minutes.
- Wipe clean and check at a low angle against the light. Repeat rather than pressing harder.
- Blend outward into the surrounding area so the repair does not end in a visible edge.
Preventing the next one
- Placemats under anything ceramic — an unglazed foot ring is harder than marble and does most of the damage.
- Lift objects rather than sliding them. Nearly all scratches are drag marks.
- Felt pads under lamps, vases, laptops and decorative objects that live on the table.
- Wipe grit off before it gets walked or dragged across — sand is harder than marble.
- Keep the table clean rather than clean it hard. Abrasive pads cause the problem they are used to solve.
How soft marble actually is
| Material | Mohs hardness | What that means in practice |
|---|---|---|
| Marble | 3–5 | Scratched by grit, ceramic, sand and steel |
| Granite | 6–7 | Resists almost everything in a kitchen |
| Quartz (engineered) | 7 | Very scratch-resistant, but heat-sensitive |
| Window glass | 5.5 | Harder than most marble |
| A steel knife blade | 5.5 | Harder than most marble |
| Unglazed ceramic base | 7+ | Harder than marble — the usual culprit |
| Quartz sand / grit | 7 | Harder than marble — tracked in on everything |
When to stop and call a professional
- The etch or scratch is deep enough to catch a fingernail.
- The damage covers a large area rather than one spot — patch-polishing a wide area leaves visible bright spots.
- The marble is honed and you want the mark gone. Polishing powder puts a shine where there was none.
- There is yellowing, cracking or chipping.
- The table is antique or the slab is thin — both raise the cost of a mistake well above the cost of advice.
Frequently asked questions
Can I use a scratch-repair kit sold for countertops?
Check it is for natural stone rather than laminate or engineered surfaces. Products aimed at resin tops can haze marble.
Does honed marble scratch less?
It scratches the same but shows it less, in the same way it hides etching.
What causes most scratches?
Grit dragged across the surface and unglazed ceramic bases. Placemats solve most of it.
Related guides
Sources
- Natural Stone Institute — Cleaning Products for Natural Stone — view
This is one part of looking after stone furniture. For how the material behaves in the first place, and which pieces suit which rooms, see Marble Furniture: The Complete Buyer’s Guide.