1. Durability and Hardness: The "Strength" Factor

Quartzite is the clear winner in terms of sheer toughness.

• Quartzite: A metamorphic rock formed from pure quartz sandstone. It ranks about 7 on the Mohs scale. It is harder than glass and even harder than steel.

• Marble: Composed of recrystallized carbonate minerals. It ranks about 3 to 4 on the Mohs scale, making it a "soft" stone prone to scratches.

2. Acid Sensitivity (The Etching Issue)

This is the most critical difference for a kitchen environment.

• Marble: Highly sensitive to acidic substances like lemon juice, vinegar, and wine. These acids cause "etching"—dull spots that ruin the polish.

• Quartzite: Generally acid-resistant. It does not etch when exposed to common kitchen acids.
  

  
  

3. Aesthetics and Veining

Both stones offer unparalleled natural beauty:

• Marble: Known for its iconic, soft flowing veins (like Calacatta).

• Quartzite: Often resembles marble but typically has more dramatic, "painterly" movement.
  

  
  

4. Maintenance and Sealing

All natural stones require care, but frequency varies:

• Marble: Requires regular sealing (every 3-6 months) and extreme caution.

• Quartzite: Extremely dense. Usually requires sealing only once a year and is much more forgiving of daily spills.

5. Price and Long-term Value

• Price: Quartzite is often more expensive due to the difficulty of quarrying and cutting its extremely hard surface.

• Value: It maintains its luster for decades, saving you money on professional re-polishing.
  

  
  

Conclusion: Which One Should You Choose?

• Choose Marble if: You prioritize a specific classic aesthetic and are willing to embrace the "patina" (wear and tear) that comes with aging stone.

• Choose Quartzite if: You want the luxurious look of marble but need a "worry-free" surface for a high-traffic kitchen.