Quartzite has a reputation as the indestructible one, and it half deserves it. Real quartzite is harder than the knives in your drawer and shrugs off the lemon juice that ruins marble. But hard and sealed are different things, and the quartzite problems we see are almost never about toughness.
How tough is quartzite, really?
Genuinely tough where hardness matters. It scratches far less easily than marble, and because it's a silica stone rather than a carbonate one, everyday acids like citrus and vinegar don't etch it. Where it lets owners down is porosity: many quartzites are surprisingly thirsty, and red wine, coffee, oil, turmeric and beetroot will soak into an unsealed slab and stay. A pale quartzite island after a big cooking night can collect more evidence than a marble one.
The mislabelled quartzite problem
Some slabs sold as quartzite aren't. Varieties often sold under names like Super White are actually dolomitic marble, a carbonate stone, and it etches the way marble does no matter what the label said. If dull rings are appearing under glasses and citrus on your "quartzite", that's likely what you own. Two ways to know for sure: ask your fabricator for the geology, or leave a drop of lemon juice on an offcut for ten minutes and look for a dull mark. The chemistry is the same story as why marble etches.
How to protect a quartzite benchtop
Day to day: seal it and keep the sealer current, wipe oils and wine promptly rather than after the guests leave, and clean with mild dish soap. For full-time cover, surface protection film closes the surface completely: spills bead on top of the film instead of testing the sealer, everyday scratches land on a self-healing layer, and if your slab turns out to be the mislabelled kind, the etch risk is covered too, because acid never reaches the stone at all. Satin film keeps honed quartzite looking honed; gloss keeps polished slabs glassy. The limits as always: trivets under hot pans, boards under knives.
Quartzite survives the knife drawer. It's the wine rack you have to watch.