When homeowners compare natural stone countertops, one of the most common questions is:
“Is quartzite harder than granite?”
The short answer is yes—quartzite is generally harder than granite.
But the full explanation helps you understand why that matters and how it affects durability in your home. Here’s a simple guide to help you compare the two stones.
Understanding Hardness: The Mohs Scale
Stone hardness is measured using the Mohs hardness scale, which ranks minerals from 1 (soft) to 10 (diamond).
Here’s where these stones fall:
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Quartzite: 7–8
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Granite: 6–7
This means quartzite is typically harder, denser, and more scratch-resistant than granite.
Why Quartzite Is Harder
Quartzite forms when sandstone undergoes intense heat and pressure, fusing individual quartz crystals into an extremely strong, compact structure.
Because quartz itself rates a 7 on the Mohs scale, the high quartz content in quartzite makes it naturally harder than most granites.
Granite, while still very strong, is a mix of minerals including quartz, feldspar, and mica—so its hardness varies based on its mineral makeup.
What This Means for Everyday Use
1. Scratch Resistance
Quartzite resists scratches better than granite, especially from knives, pots, and daily kitchen tools.
2. Durability in Busy Kitchens
Because it’s harder, quartzite usually stands up better to heavy use and long-term wear.
3. Better Heat Tolerance
Both stones handle heat well, but quartzite’s dense structure gives it an extra layer of protection.
4. Maintenance Needs
Neither stone is high-maintenance, but quartzite’s hardness helps reduce surface damage over time.
Is Quartzite Ever Softer?
Yes—there are exceptions.
Some stones sold as “quartzite” are actually dolomitic marble or soft quartzite, which are not as hard as true quartzite.
A professional fabricator can test the stone to confirm whether it’s genuine quartzite.
Simple homeowner test:
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Try scratching the stone with a piece of glass.
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If the stone scratches the glass, it’s likely real quartzite.
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If the glass scratches the stone, it’s probably not true quartzite.
Quartzite vs. Granite: Appearance Differences – Is Quartzite Harder Than Granite?
While hardness is important, homeowners also compare the look.
Quartzite
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Elegant, flowing movement
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Marble-like veining
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Light neutrals, bright whites, greens, blues, and exotic patterns
Granite
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Speckled, grainy appearance
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Rich earth tones and deep colors
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More consistent patterns
Quartzite often appeals to homeowners who want a marble aesthetic but need greater durability.
Which One Should You Choose?
Choose quartzite if you want:
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A harder, more scratch-resistant surface
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A natural stone that looks like marble
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Long-lasting durability with simple maintenance
Choose granite if you prefer:
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A more consistent, speckled pattern
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A slightly more budget-friendly option
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A wide range of colors and textures
Both materials are excellent choices—but if hardness is your main concern, quartzite wins.
