Quartzite vs marble for kitchen counters
True quartzite is much harder than marble and resists etching from lemon, wine and vinegar, so it is the better choice if you want a light, veined counter with less worry. Marble is softer and will etch, but it wears into a beautiful patina; whichever you pick, test the slab, because some stones sold as quartzite are really marble or dolomite.
What is the real difference between quartzite and marble?
Marble is limestone or dolomite that heat and pressure turned crystalline. It is made mostly of calcite or dolomite, sits around 3 on the Mohs hardness scale, and reacts with acid.
Quartzite is sandstone that was fused into solid quartz. It sits around 7 on the Mohs scale, which is harder than glass and steel, and quartz does not react with kitchen acids.
Why are some 'quartzites' really marble or dolomite?
Stone trade names are not regulated. Some white and gray stones sold as quartzite, or as 'soft quartzite,' are actually dolomitic marble. They look the part and can be lovely counters. But they will etch, and buyers who paid for quartzite performance are often surprised.
How do you test whether a stone is real quartzite?
Always test a sample or an offcut from the same slab, never the installed counter.
- Acid test: put a few drops of lemon juice or vinegar on the polished face. Wait 10 to 15 minutes, then wipe and look at it in raking light. A dull, rough spot means calcite or dolomite is present. Dolomite reacts slowly, so give it the full time.
- Glass test: drag a sharp corner of the stone across a glass tile with firm pressure. True quartzite scratches glass easily. Marble and dolomite do not.
- Knife test: a steel blade should not scratch true quartzite.
On a large job, ask for a geological or petrographic description of the stone.
Does quartzite need sealing?
Yes. Hard does not mean non-porous. Some quartzites absorb oil and water more readily than marble. Seal with a penetrating sealer and do a water-drop test once a year.
Which one is right for your kitchen?
Choose true quartzite if you cook a lot, have kids, or want a light counter that looks new for years. Expect fabrication to take longer, because quartzite is harder to cut and polish.
Choose marble if you love how it looks and feels and can live with etching as part of the story. A honed finish makes etching far less visible.
Tribeca Stone keeps samples of both and can send them out the same day in New York, so you can run the lemon test at home before you choose.
Questions we hear
Is quartzite the same as quartz?
No. Quartzite is a natural stone. Quartz countertops are an engineered product made from crushed quartz bound with resin.
Does dolomite etch?
Yes, though more slowly than calcite marble. A lemon test left for 10 to 15 minutes usually shows it.
Is quartzite stain-proof?
No natural stone is. Quartzite resists etching, but some types absorb oils, so sealing still matters.
Can quartzite chip?
Yes. It is hard but can be brittle at sharp edges. An eased or slightly rounded edge profile holds up better than a crisp square edge.
Shop the materials
See it in person.
Samples go out the same day in New York, or come to the showroom at 104 Reade Street and we will put the real stone in your hands.
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