Super White: Dolomite or Quartzite? Why the Name Confuses Buyers
Super White: dolomite or quartzite? Super White is a trade name, not a geological one, and slabs sold under it are often dolomite, even when labeled quartzite. The difference matters: true quartzite scratches glass and doesn't etch, while dolomite is softer and can etch slowly with acids. Test a sample with glass and vinegar, and ask for the stone type in writing before you buy.
Summary
- Stone names are trade names; they aren't regulated.
- Super White is frequently dolomite, sometimes sold as quartzite.
- Glass and vinegar tests on a sample reveal what you have.
- Both make beautiful countertops; they just need different care.
Why Super White Confuses Buyers
Stone names are chosen by quarries and distributors for marketing, and nothing stops the same look from being sold under different labels. Super White has a bright white or light gray base with soft gray veining, a look shared by some dolomites and some quartzites. Because quartzite sounds harder and more premium, dolomite slabs are sometimes labeled as quartzite.
How to Tell Which One You Have
| Test | If quartzite | If dolomite |
|---|---|---|
| Glass scratch | Scratches glass | Doesn't scratch glass |
| Vinegar, 10 minutes | No change | Faint dull spot |
| Knife tip on an offcut | Hard to mark | Can be scratched |
Always test a sample or offcut, never the face of your slab. For the full method, see dolomite vs quartzite.
Why the Difference Matters in Your Kitchen
If your Super White is quartzite, you get a very hard surface that doesn't etch. If it is dolomite, you still get a beautiful, durable stone, but acids can leave faint marks and knives can scratch it. Neither is a bad choice; the problem is only paying for one and getting the other.
Learn more in what is dolomite countertop.
Buying a Super White Slab With Confidence
Ask for the stone type on your quote, test a sample and choose the actual slab in person. See our dolomite slabs and white quartzites side by side in our yard, or browse more countertop stone guides.
Frequently Asked Questions
Is Super White quartzite or dolomite?
Often dolomite, even when sold as quartzite. Test a sample to know.
Does Super White etch?
If it is dolomite, it can etch slowly with acids. True quartzite doesn't.
Is Super White a good kitchen countertop?
Yes, with the right care for the stone it really is.
Does Super White need sealing?
Yes. Both dolomite and quartzite benefit from periodic sealing.
Why do sellers call dolomite quartzite?
Quartzite sounds harder and more premium. Names aren't regulated.
