Technical guides · 2 min read

Marble vs Granite vs Quartzite: How to Choose for Your Project

When selecting a natural stone for a kitchen, bathroom, floor or façade, the choice between marble, granite and quartzite can feel overwhelming. Each stone offers distinct aesthetics, performance characteristics and cost implications. This guide breaks down the essential properties—hardness, acid resistance, porosity, appearance, maintenance and price bands—so architects, designers, contractors and buyers can match the right stone to the right application. We also highlight common mistakes and practical tips for procurement and installation.

Hardness and Durability

Hardness is measured on the Mohs scale; granite (6–7), quartzite (6–7) and marble (3–4). Granite and quartzite are far more resistant to scratches and impact, making them ideal for high‑traffic floors and kitchen worktops. Marble, while softer, can still be durable if properly sealed and maintained, but it is more prone to abrasion and chipping.

Acid Resistance and Chemical Stability

Granite and quartzite are largely inert to acids, with pH tolerance above 5. Marble reacts readily with acidic substances, leading to etching and surface dullness. In bathrooms or kitchens where acidic cleaners or food residues are common, granite or quartzite offer superior longevity.

Porosity and Water Absorption

Porosity determines how much water a stone can absorb. Granite and quartzite typically have porosities below 2 %, while marble can absorb 5–10 %. Lower porosity means less risk of staining and easier maintenance. For wet areas such as showers or pool surrounds, granite or quartzite are preferable.

Aesthetic Appeal and Colour Variation

Marble is renowned for its veining and subtle colour gradients, providing a luxurious, classic look. Granite offers a wide range of colours and patterns, from solid to speckled, and quartzite combines the elegance of marble with the durability of granite, often featuring dramatic veining. The choice often hinges on the desired visual impact and brand identity.

Maintenance Requirements

All three stones benefit from periodic sealing, but marble requires more frequent attention—every 6–12 months—to protect against acid damage. Granite and quartzite can be sealed once a year, though high‑traffic areas may need more frequent re‑sealing. Regular cleaning with pH‑neutral detergents is essential for all.

Price Bands and Value

Granite typically ranges from 70–120 €/m², marble from 80–170 €/m² with premium Carrara or Calacatta variants reaching 200–500 €/m², and quartzite from 200–500 €/m². While marble and quartzite command higher prices, their aesthetic value and durability can justify the investment for high‑end projects.

Common Mistakes to Avoid

1) Ignoring the stone’s porosity—leading to staining. 2) Using acidic cleaners on marble. 3) Choosing a slab that is too thin for the intended load. 4) Skipping proper sealing. 5) Overlooking the need for a professional installer familiar with the stone’s specific handling.

Glossary

A — Abrasion Resistance — The ability of a stone to withstand wear from friction. B — Porosity — The percentage of void space in a stone that can absorb liquids. C — Acid Resistance — The stone’s ability to resist chemical attack from acids. D — Veining — Natural patterns formed by mineral inclusions. E — Sealing — Application of a protective coating to reduce porosity. F — Mohs Scale — A scale of mineral hardness from 1 (talc) to 10 (diamond). G — Etching — Surface damage caused by acids or abrasive cleaners. H — Load‑Bearing Capacity — The maximum weight a slab can support without deforming.

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