Quartzite vs Quartz Countertops: The Difference, Cost and Which Fits a Houston Kitchen
Quartzite vs quartz is the most common mix-up in a Houston countertop showroom, and the two are not the same thing: quartzite is a natural stone that costs $60 to $200 per square foot installed, and quartz is a factory-made slab that costs $50 to $150 (SlabWise, July 2026). Quartzite wins on heat and outdoor use, quartz wins on zero sealing, and in Houston a mid-range quartzite kitchen runs about $75 to $130 per square foot installed (Sugar Land Stone 2025).
Eduardo, the countertop fabricator at Kitchen Remodel Masters with 15 years in the trade, cuts and polishes both in KRM’s own Houston shop. This guide explains the naming confusion, puts the two in one table, and shows how to check a slab at the yard. Prices are published market ranges with sources, not a KRM quote.
Why the names get confused
Quartz is a mineral. It is the main ingredient in both products, which is the whole problem.
- Quartzite is a metamorphic rock. It started as sandstone, then heat and pressure deep in the earth fused the sand grains into a dense, hard stone. It is quarried in blocks, sliced into slabs, polished and sealed, the same way granite is handled.
- Quartz countertops are an engineered product. Makers grind quartz mineral into powder and chips, mix it with about 6 to 10 percent polymer resin and pigment, press it into slabs and cure it. Brands include Cambria, Caesarstone, MSI Q and Silestone.
Salespeople sometimes shorten “quartzite” to “quartz,” so ask one direct question at the yard: is this a natural slab or a manufactured one? The quartzite countertops page and the quartz countertops page cover each material on its own.
Quartzite vs quartz: the comparison table
| Quartzite | Quartz | |
|---|---|---|
| What it is | Natural metamorphic stone, quarried and sliced | Engineered slab: ground quartz mineral plus resin |
| Cost installed per sq ft | $60 to $200, most kitchens $80 to $140 (SlabWise 2026); $80 to $210 (Fixr 2025); $75 to $130 in Houston (Sugar Land Stone 2025) | $55 to $150 (SlabWise 2026); $74 to $99 (Thumbtack 2026) |
| Hardness (Mohs) | 7 to 7.5 (SlabWise 2026) | About 7 |
| Heat | Stone takes it; sealer is rated 200 to 400°F, so use a trivet | Resin scorches at about 300°F (MSI); trivet required |
| Stains and sealing | Porous; reseal every 1 to 3 years (SlabWise 2026) | Non-porous; never sealed |
| Scratches | Scratches glass; knife-proof in normal use | Knife-proof; resin surface can show fine scuffs over time |
| Look | Real veining, each slab unique; whites, grays, soft greens and blues | Consistent pattern; marble looks, concrete looks, solid colors |
| Outdoor use | Yes, under a cover | No; Cambria and Caesarstone exclude outdoor installs |
| Maintenance | Neutral stone cleaner, water bead test twice a year | Warm water and mild soap |
Cost: quartzite vs quartz in Houston
Quartzite is usually the higher number, but the overlap is bigger than most people expect.
SlabWise (July 2026) breaks quartzite into three tiers: entry stones like White Macaubas and Virginia Mist at $60 to $90 per square foot installed, mid-range at $80 to $140, and exotic Brazilian slabs like Cristallo past $150 and up to $200 or more. Fixr (August 2025) gives a national range of $80 to $210. The Houston-specific number from Sugar Land Stone (2025) is $75 to $130 installed, which fits a 50 square foot kitchen at roughly $3,750 to $6,500.
Quartz sits lower on average. SlabWise (2026) lists engineered quartz at $55 to $150 installed with most jobs at $70 to $100, and Thumbtack (July 2026) reports $74 to $99. The same 50 square foot kitchen in mid-range quartz runs about $3,500 to $5,000.
An entry quartzite and a premium quartz can cost the same per square foot. A Taj Mahal or Calacatta Macaubas slab, at $55 to $110 for the slab alone before fabrication (SlabWise 2026), costs more than almost any quartz. Fabrication adds $25 to $55 per square foot on quartzite (SlabWise 2026) because the stone is hard on blades; KRM fabricates in-house and quotes that step line by line. The full breakdown is in the countertop replacement cost guide.
Heat
This is the clearest split between the two.
Quartzite formed under temperatures well above 1,000 degrees Fahrenheit (SlabWise 2026), so the stone itself does not care about a skillet. The weak link is the sealer on top of it. Impregnating sealers are rated to roughly 200 to 400 degrees, and a pan straight out of a 500 degree oven can scorch the sealer and leave a dull ring. Use a trivet and the stone will outlast the house.
Quartz has resin all the way through. MSI rates its Q quartz to about 300 degrees before scorching. A burn mark on quartz is usually permanent because discolored resin cannot be polished out the way stone can.
Stains, sealing and Houston hard water
Quartz is non-porous. Red wine, coffee and oil wipe off, and there is nothing to reseal.
Quartzite is porous to a degree that varies by slab. SlabWise (2026) recommends resealing every one to three years and gives a 15 minute water bead test to check. Eduardo seals every quartzite top before it leaves the shop and again after install, and homeowners can reapply with a $25 to $60 bottle of sealer in an afternoon.
Houston tap water is hard, and the white mineral film it leaves near the sink shows on both materials. A neutral cleaner lifts it. Skip acidic cleaners on quartzite; strong acids such as rust removers can etch even quartzite (Use Natural Stone 2017).
Scratches and hardness
Quartzite rates 7 to 7.5 on the Mohs scale, engineered quartz about 7, granite 6 to 6.5 and marble 3 to 4 (SlabWise 2026). A steel knife blade sits near 5.5, so neither scratches under a knife in normal use. Over a decade, the resin surface on quartz can pick up fine scuffs near the sink that polished stone does not.
Sun and outdoor use
Quartzite goes outside under a cover. Quartz does not.
Cambria’s product specification sheet states its quartz is not approved for outdoor use, and Caesarstone’s residential lifetime warranty (June 2025) lists “products installed in any outdoor application” as an exclusion, pointing buyers to a separate outdoor line. UV light yellows the resin, and the yellowing is uneven where shade falls. The same rule applies indoors to a counter that sits in direct afternoon sun through a west window: quartzite, granite or porcelain is the safer pick there. For a covered outdoor kitchen, see the outdoor kitchen page.
How to tell quartzite from quartz at the yard
Two cheap tests, both from the Natural Stone Institute’s Use Natural Stone guide, settle it in 20 minutes.
- Glass scratch test. Take a glass tile and press a rough edge of the slab against it. Real quartzite scratches glass easily. If there is no broken edge, drag a knife tip across the slab instead; genuine quartzite is scratched lightly or not at all.
- Lemon juice test. Put a few drops of lemon juice or vinegar on the slab, wait 15 minutes, wipe and look at an angle. Quartzite shows zero etching. Marble sold as quartzite shows a dull spot.
- Look at the edge and the label. Quartzite has a sugary, granular texture, a stone name and a bundle number. Quartz has a uniform pattern, a brand name and a color code.
Why this matters: slab names like White Macaubas and Sea Pearl are sometimes marble or quartzitic sandstone sold as quartzite (SlabWise 2026), and the Use Natural Stone guide is blunt that there is no such thing as soft quartzite. If a yard calls a slab soft quartzite, test it before you buy. The quartzite countertops page lists the Houston slabs that are reliably true quartzite.
Which one for your kitchen
- You cook with cast iron and want to set it down anywhere: quartzite, with a trivet for anything straight from the oven.
- You never want to seal anything: quartz.
- You want a white marble look: quartzite like Taj Mahal if you accept resealing, quartz if you want zero upkeep.
- The counter is in an outdoor kitchen or under a west-facing window: quartzite. Not quartz.
- Long island with a waterfall edge: quartz miters more predictably because the pattern repeats; quartzite can be bookmatched if you buy two sequential slabs.
- Tight budget: compare entry quartzite ($60 to $90) against mid quartz ($70 to $100); the numbers can land within $10 of each other (SlabWise 2026).
- Painted cabinets in a 1950s Bellaire ranch: either; low-vein quartz or soft gray quartzite both pair well with painted doors.
The flat panel cabinets with quartzite countertops project shows a Houston kitchen where the stone won. For a third option, the quartz vs granite guide puts granite in the same comparison, and all three are part of countertop replacement in Houston.
Get an exact number
Kitchen Remodel Masters measures your kitchen, shows quartzite and quartz on your cabinets in a free 3D design, and gives a written proposal with slab, fabrication, edge and backsplash priced line by line. The in-home consultation and the 3D design are free. Call (713) 364-6603 or contact us to set a time.
Sources
- SlabWise, Quartzite Kitchen Countertops (hardness, heat, sealing, tests), updated July 2026: https://slabwise.com/guides/quartzite-kitchen-countertops
- SlabWise, Quartzite Countertop Cost per Square Foot Installed, updated July 2026: https://slabwise.com/guides/quartzite-countertop-cost-per-square-foot-installed-2026
- SlabWise, Quartz Countertop Cost per Square Foot, updated July 2026: https://slabwise.com/guides/quartz-countertop-per-square-foot-cost
- Fixr, Quartzite Countertops Price, updated August 2025: https://www.fixr.com/costs/quartzite-countertop-installation
- Thumbtack, Cost to Install Countertops, updated July 2026: https://www.thumbtack.com/p/cost-to-install-countertops
- Sugar Land Stone, Quartzite Countertop Cost in Houston, June 2025: https://sugarlandstone.com/quartzite-countertop-cost-in-houston-why-it-runs-above-granite
- Use Natural Stone (Natural Stone Institute), The Definitive Guide to Quartzite, 2017: https://usenaturalstone.org/definitive-guide-quartzite/
- Cambria, Product Specification Sheet (not approved for outdoor use): https://www.cambriausa.com/content/dam/cusa/sales-marketing-collateral/product-technical-information/product-specification-sheet-english.pdf
- Caesarstone, Indoor Surfaces Residential Lifetime Warranty, June 2025 (outdoor exclusion): https://studio.caesarstoneus.com/wp-content/uploads/2025/06/CSIndoorSurfaces-Residential-Lifetime-WarrantyJune2025.pdf
- MSI Surfaces, Q Quartz Countertops (about 300°F heat limit): https://www.msisurfaces.com/quartz-countertops/
Frequently Asked Questions
What is the difference between quartzite and quartz?
Quartzite is a natural stone, quarried as a slab and cut like granite. Quartz is a factory product made of about 90 to 94 percent ground quartz mineral held together with resin (SlabWise 2026). The names overlap because both are built on the same mineral, but one is a rock and the other is a manufactured slab.
Is quartzite more expensive than quartz?
Usually, yes. SlabWise (July 2026) lists quartzite at $60 to $200 per square foot installed, with most kitchens at $80 to $140, and engineered quartz at $55 to $150. In Houston, Sugar Land Stone (2025) puts quartzite at $75 to $130 installed. Entry-level quartzite like White Macaubas can land close to mid-range quartz. These are market ranges, not a Kitchen Remodel Masters quote.
Which is harder, quartzite or quartz?
Quartzite. It rates 7 to 7.5 on the Mohs hardness scale, engineered quartz about 7, and granite 6 to 6.5 (SlabWise 2026). Both are harder than a steel knife blade, which sits near 5.5, so neither scratches in normal kitchen use. Quartzite has a slight edge, and it has no resin layer that can scuff.
Can you put a hot pan on quartzite?
The stone can take it, but the sealer may not. Quartzite formed at well over 1,000 degrees Fahrenheit, while the impregnating sealers used on it are rated to roughly 200 to 400 degrees (SlabWise 2026). A pan straight from a 500 degree oven can scorch the sealer and leave a mark. Use a trivet on quartzite and always on quartz, which MSI rates to about 300 degrees.
Does quartzite need to be sealed?
Yes. Reseal every one to three years under normal use (SlabWise 2026). The test is simple: pour a tablespoon of water on the counter and wait 15 minutes. If it beads, the seal is fine. If it soaks in and darkens the stone, reseal. A bottle of sealer runs $25 to $60 and a kitchen needs one or two bottles.
Can quartz countertops go outside?
Not standard quartz. Cambria's product specification sheet says its quartz is not approved for outdoor use, and Caesarstone's June 2025 residential warranty excludes products installed in any outdoor application. UV light yellows the resin. Quartzite, granite and porcelain are the outdoor choices for a covered Houston kitchen.
What is soft quartzite?
It is a sales label, not a stone. The Natural Stone Institute's Use Natural Stone guide says there is no such thing as soft quartzite, and a slab sold that way that scratches or etches easily is most likely marble or a quartzitic sandstone. Test the slab yourself with lemon juice and a glass tile before you pay for it.
Which looks more like marble, quartzite or quartz?
Both can. Quartzite gives real marble-like veining in white and gray, and every slab is different. Quartz gives a printed or mixed marble look that repeats across slabs, which makes seams and waterfall edges easier to match. If you want the exact slab you saw at the yard, that is quartzite. If you want the pattern to match a sample, that is quartz.