Dolomite Benchtop Protection: Super White and Etching

Dolomite, most commonly sold as Super White, is one of the most misunderstood benchtop stones in Australia. It has the soft, flowing look of marble with a reputation for being tougher, so buyers assume it is low-maintenance. The reality is different, and this guide sets it straight: what dolomite actually is, why it etches, and how to protect it.

The mislabel trap

Dolomite sits between marble and quartzite in hardness, and it is often sold under quartzite-sounding names or simply as Super White. Genuine quartzite is very hard and acid-resistant; dolomite is neither to the same degree. If a supplier cannot confirm the exact stone, test a sample offcut with a drop of lemon juice, if it dulls, you have a calcareous stone that will etch. Many benchtops sold as quartzite are in fact dolomite or marble.

Why dolomite etches faster than marble

Dolomite is a calcium-magnesium carbonate, so like marble it reacts with acids, wine, lemon, vinegar, many cleaners, leaving a dull etch mark. In practice many owners find Super White marks even more readily than marble. Etching is not a stain: it is physical damage to the polished surface, it happens in seconds, and it happens whether or not the stone is sealed. A penetrating sealer slows staining but does nothing against etching.

How to protect a dolomite benchtop

The complete answer is the same as for marble: seal the stone to slow staining, then protect it with DURAFLEX surface protection film, which physically stops the etching and scratching a sealer cannot. DURAFLEX is an optically clear, self-healing film with roughly 95% clarity, heat-sealed by automotive-trained specialists, CSIRO fire-tested to AS/NZS 1530.3, made from food-safe materials and backed by a warranty of up to 10 years. Our comparison of sealer versus film explains why both layers matter. For the full picture, read the complete guide to protecting stone benchtops.

The honest note

Film prevents etching from here on; it does not undo existing etch marks, though it can be applied over lightly marked stone once prepared. If you love the Super White look, buy it with clear eyes and a protection plan. Request an instant estimate to protect your dolomite benchtop.

Frequently asked questions

Does dolomite etch like marble?

Yes, and often faster. Dolomite, commonly sold as Super White, is a calcareous stone that reacts with acids like wine, lemon and vinegar, leaving dull etch marks. Many owners find it marks even more readily than marble.

Is Super White quartzite or dolomite?

Super White is dolomite, not true quartzite, though it is often sold under quartzite names. Genuine quartzite is much harder and acid-resistant; dolomite etches. Test a sample offcut with lemon juice, or ask the supplier to confirm the exact stone.

Does sealing stop dolomite from etching?

No. A sealer slows staining but cannot stop acid etching on dolomite or marble. Only a physical barrier film like DURAFLEX stops etching.

How do I protect a dolomite benchtop?

Seal the stone to slow staining, then add DURAFLEX surface protection film, which physically stops the etching and scratching a sealer cannot. The film is CSIRO fire-tested, made from food-safe materials and backed by a warranty of up to 10 years.