Quartzite vs marble: which is better?

How do quartzite and marble compare side by side?

Is quartzite harder than marble?

Yes. Marble is mostly calcite, which defines 3 on the Mohs scale. Quartz defines 7, and quartzite lands at 7 to 8 depending on the source. A harder surface resists scratches from keys, ceramics and grit; marble shows them.

Hardness has a trade-off in the shop. Quartzite is abrasive, and one guide says blade life drops 30 to 40% compared with marble, so fabrication costs more.

Does quartzite etch like marble?

No, if it is true quartzite. Etching is an acid reaction with calcite, and quartzite contains none. Marble etches from lemon juice, vinegar and tomato sauce, sometimes within minutes, leaving dull spots on polished surfaces. See marble etching.

Check any slab sold as quartzite with a lemon juice or vinegar test on a sample. Super White and Fantasy Brown are often dolomitic marble and can etch.

Which costs more, quartzite or marble?

Quartzite is usually the higher number. Installed quartzite runs about $70 to $200+ per square foot, with exotic types like Azul Macaubas at the top, against about $75 to $150 for marble. One fabricator cites a $4,200 difference on a 48 sq ft kitchen between marble and a high-movement quartzite.

Marble pricing depends heavily on the stone; Calacatta costs far more than Carrara. See Calacatta and Carrara.

What does each need day to day?

Marble asks for more attention. It is calcite, so keep lemon juice, vinegar and acidic cleaners off it, blot spills, and use pH-neutral stone cleaner. Seal it on the schedule above, and expect polished surfaces to dull where acids sit. If etching worries you, see marble etching.

Quartzite is easier: mild soap and water, trivets under very hot pans, and a sealing schedule that depends on the stone. One guide warns that skipping the sealing schedule on quartzite shows within a year, so do not treat it as maintenance free.

Where each is used differs too. Marble is soft enough to carve easily, which is why it appears in sculpture, monuments, columns and floor tile. Quartzite goes into countertops, stair treads and floor tile.

How do you tell quartzite from marble in a showroom?

Names, prices and country of origin are unreliable, and the two stones can look alike, so test a sample. Use more than one test, because any single result can mislead:

1. Glass test: drag a corner of the sample across glass. Real quartzite scratches it audibly and leaves a true scratch; marble leaves a faint or powdery trail.
2. Knife test: try the tip of a blade. Quartzite is scratched lightly or not at all, while marble scratches easily.
3. Etch test: leave lemon juice or vinegar on an out-of-sight spot for about 15 minutes, then wipe it off. Quartzite shows no mark; marble and dolomitic marble show a dull etch.

A stone that passes some tests and fails others, such as Fantasy Brown, has layers of both and is best treated as marble. Ask the supplier to name the stone and test the exact slab you are buying.

Which is better for a bathroom, quartzite or marble?

Quartzite handles toiletries, cleaners and daily abuse better. Marble works well in bathrooms with lighter use because spills are fewer than in kitchens, a sealer slows staining, and a honed finish hides etching; see honed vs polished marble and how to seal marble.

Pietra Fonte carves marble tubs, basins and vanities to order but does not offer quartzite. See marble bathtubs.