Quartzite vs quartz: they are not the same thing
Quartz is a manufactured slab, crushed stone bound with resin, non-porous and consistent. Quartzite is a natural rock, quarried, unique slab to slab, harder, far more heat tolerant, and mildly porous so it needs sealing. The names are similar, the materials are not.
| Quartz (engineered) | Quartzite (natural) | |
|---|---|---|
| Origin | Manufactured in a factory | Quarried |
| Composition | About 90% crushed quartz plus resin | Recrystallised sandstone |
| Consistency | Uniform | Every slab unique |
| Heat | To about 150°C | Very good |
| Sealing | Never | On fitting, then periodically |
| Acid and etching | Resistant | Far more resistant than marble |
| Cost | Lower | Higher, often above granite |
Why the confusion is expensive
People ask for quartz, get shown quartzite, and end up either paying more than they expected or being surprised that their worktop needs sealing. The reverse also happens: somebody wants a genuine one-off natural stone and is sold an engineered slab because the names sounded the same. Both are good materials and they suit different people, so it is worth being clear which one is being quoted.
Who should choose quartzite
People who want marble and cannot live with marble. Quartzite gives you the dramatic natural movement without the acid sensitivity that catches marble owners out. Taj Mahal is the most requested, warm and creamy. Cristallo is nearly translucent. Fusion and Lemurian Blue behave more like artwork than surfacing and usually end up on an island.
How to tell which one you are being shown
Ask two questions. Does it need sealing, and is every slab different? If the answer to both is yes, it is a natural stone. If the answer to both is no, it is engineered. A seller who cannot answer those quickly is not a seller you want cutting a three thousand pound surface.
The other tell is the way it is sold. Engineered quartz is sold by colour name from a range, and you can order the same colour again next year. Quartzite is sold by the slab, and if you want it you reserve that specific slab, because when it is gone there is not another one exactly like it.
What each one costs
Engineered quartz is the more predictable of the two, and most quartz kitchens land between £2,000 and £5,000 supplied and fitted including VAT, which our estimator will narrow down in about a minute. Quartzite sits above that, generally above granite too, and it varies far more because it depends entirely on the block. We price it by hand for that reason rather than pretending a calculator could be honest about it.
If the budget is the deciding factor, engineered quartz in a good marble pattern gives you most of the look for meaningfully less money, and nobody but you will know.
Living with each one
Quartz asks for warm soapy water and nothing else, ever. Quartzite asks for sealing on fitting and then periodically, a board for chopping, and a trivet for anything straight off a flame even though it will very probably cope. That is a small routine rather than a burden, but it is a routine, and it is worth being honest with yourself about whether you will keep it.
A caution worth knowing
Some stones sold as quartzite are softer than true quartzite and behave more like marble, including etching. That is not always deliberate, the trade naming is genuinely loose. It is a reason to buy from somebody who will tell you plainly what a stone is and how it will behave, and it is why our stone pages carry care notes written for the individual stone rather than inherited from its category.