True quartzite is the hardest stone on most countertops — about a 7 on the Mohs scale (some sources say 7–8), harder than granite and far harder than marble. It is silica, not the calcium carbonate that marble is made of, so it does not etch from lemon, wine, or vinegar the way marble does. When true quartzite loses its shine, etching is not the reason.
So why does it look dull or scratched? On true quartzite the cause is usually abrasion and fine micro-scratching from daily grit, hard-water and mineral scale, soap or cleaning-product film, or a weak and uneven factory polish left by the fabricator. None of that responds to marble powders or hardware-store polishing kits — those rely on a chemical reaction with calcite that quartzite’s silica simply does not undergo. Bringing the finish back takes mechanical diamond work, the right way for your stone.
Grit and abrasive dust trapped under cookware and dishware get dragged across the surface, leaving countless tiny scratches. Each one scatters light instead of reflecting it, and over time that haze reads as a dull, tired surface.
Minerals left behind by evaporating water build into a cloudy scale film, especially around faucets and wet zones. It sits on the finish and steals the reflection until it’s properly removed.
Dish soap, all-purpose sprays, and waxy “polish” products leave a thin residue that dulls the surface. Each clean adds another layer, so the counter looks flat no matter how often you wipe it.
Some slabs arrive with a thin or inconsistent polish from the fabricator. The shine was never fully there to begin with, so the stone can look lackluster from day one no matter how carefully you treat it.
The sink run and prep area take the most abrasion, so they wear faster than the rest of the counter. The result is a noticeably duller stripe right where you work, while the edges still look fine.
None of this means your counter is ruined. Quartzite is roughly a 7 on the Mohs scale — harder than granite, far harder than marble — so a stone that hard doesn’t simply wear out the way softer stone does. The shine fades, but the stone underneath is fine. It just needs the finish brought back the right way: mechanical diamond restoration, worked coarse to fine. That same hardness is exactly why most people can’t do it right.
Sureshine has restored natural stone for over 30 years. Quartzite is one of the hardest stones we work — and one of the most misunderstood. We identify exactly what you have, then bring the finish back with the diamond method the stone actually requires, not the marble powders that do little to nothing on it.
Most consumer “marble polishing” kits work by a chemical reaction, not by sanding. The powders and crystallization products sold for marble, limestone and travertine react with the calcium carbonate in those soft calcite stones — oxalic acid and tin-oxide compounds bond to the calcite to build a thin reflective layer. It works because the stone is chemically willing to react. Marble is only about Mohs 3–4, so it gives easily.
True quartzite is a different material entirely. It is silica (quartz), roughly Mohs 7 — harder than granite and dramatically harder than marble — and it does not undergo that calcite reaction. The acid and powder have nothing to grab, so those kits barely touch it. Quartzite has to be polished the way granite is: mechanically, with diamond abrasives worked through progressive grits — from coarse steps around 50 grit up through 3000 and finer (the exact ladder varies by stone and condition). Each grit removes the scratch pattern from the one before it until the surface is flat enough to reflect light. The same hardness that makes quartzite so durable is exactly why the hardware-store kit won’t touch it — and why it takes a technician with a diamond system to bring the shine back.
We refine the surface with diamond abrasives and water, the same mechanical method granite needs. The acid and powder polishes sold for marble do little to nothing on quartzite’s silica — so we don’t use them.
We work coarse to fine, step by step. Coarser grits level the surface; each finer grit erases the scratch pattern from the last. Skipping steps leaves haze — building the grits in order is what produces true, even clarity.
We stop where you want it — a smooth honed or satin matte, or all the way to a full reflective polish. On a Mohs-7 stone, finish changes are assessed per slab, so we look at yours before we promise a result.
Quartzite can be finished polished, honed, or leathered — and the finish you choose changes the whole feel of the counter. Here is what each one does.
Glossy and light-catching. The classic high-shine look that shows off the depth, veining, and crystalline sparkle of the stone.
Smooth satin with little to no shine. Hides water spots and fingerprints better than polished, for a soft, modern surface.
A low-sheen, tactile texture — the most forgiving finish for hiding spots and smudges, with a subtle hand-feel you can run a palm across.
One honest note: restoring your existing finish is routine, and we can often change between finishes too. But because true quartzite is about a 7 on the Mohs scale — harder than granite — leathering and heavier finish changes are a bigger job, so we assess them per slab rather than promising the same result on every stone. Send us photos and we’ll tell you what’s practical for yours.
Two counters can both be labeled “quartzite” and need completely different polishing. The difference isn’t the label on the slab — it’s what the stone is actually made of. Before we touch yours, we identify what you really have, because using the wrong method on the wrong stone ruins the finish.
True quartzite is nearly pure quartz — about a 7 on the Mohs scale (some sources say 7–8), harder than granite and far harder than marble. Because it’s silica, not calcium carbonate, it does not etch from lemon, wine, or vinegar.
So when it goes dull, that’s wear: micro-scratching from grit, hard-water scale, product film, or a weak factory polish — not etching. We restore the shine mechanically with diamond abrasives in progressive grits, then seal afterward on the more porous varieties for protection.
Many slabs sold as “quartzite” — often the softer “Calacatta-look” pieces — are actually dolomitic marble or carry significant calcite content. Those stones are softer, and because they contain calcium carbonate, they can etch and stain from everyday acids.
Good news: those etch marks are surface-level and can usually be honed or polished out — but the stone is worked differently than true quartzite. We test the actual slab and tell you what you really have rather than guessing from the name.
The two stones polish by different mechanics. True quartzite’s silica only responds to diamond abrasives; the soft calcite look-alikes are refined differently. Use the wrong approach on the wrong stone and you can leave haze, an uneven sheen, or a finish that won’t hold.
That’s why we identify the material before we start — helpful diagnosis, not guesswork. We never label a specific named variety as definitively one stone or the other; only a test on your actual slab is conclusive.
Not sure which one you have? Send us a photo — we can usually identify it from the veining, the way it takes a polish, and how light hits the surface, then confirm on your actual slab. You can also browse 75+ quartzite varieties with full technical specs at stoneintelligence.ai/stones.
Quartzite polishing is priced two ways at once: by the square footage of the surface, and by its condition and the finish you’re after. A light refresh on counters that are mostly in good shape is a different job than heavy scratch removal — and changing the finish (polished, honed, or leathered) is different again. We price the work in front of us, not a generic stone.
That’s why we quote from photos and your rough square footage rather than a number off a chart.
Full restoration — for tired, scratched, or worn-down surfaces that need the finish brought all the way back. More grit steps, more time, priced accordingly.
Lighter refresh — for counters that are mostly in good shape and just need their shine and clarity restored. Less work, less cost.
EnduraShield seal add-on — sealing is separate protection, applied after polishing, and available as an add-on so you can polish and protect in one visit. Polishing restores the look; sealing protects it. Ask us about adding EnduraShield sealing.
Send photos plus the rough square footage — we quote a specific number, not a range.
Your work — done right, or we come back
Sureshine Care and Restoration Services, Inc. guarantees all work to be completed as indicated. If you are not satisfied, call our office and we will return to remedy the situation at no obligation or additional cost.
Honest answers to the questions we hear most.
A wide shot of the counter, rough square footage, and a close-up of the dull or scratched spot.
A number, not a range. We confirm the finish we’ll restore it to; a change to a different finish is confirmed once we see the slab.
Progressive diamond grits in your kitchen, coarse to fine. Half-day to full day; counter back in use the same day.
Polishing restores the look; it doesn’t protect against stains. Add EnduraShield to guard the new finish, especially on porous varieties.
Prefer to talk to a person?
Call (714) 627-9001
