About Quartzite

Quartzite is a metamorphic rock formed when quartz-rich sandstone is subjected to extreme heat and pressure. The result is one of the hardest natural stones available, rivalling granite in durability while offering the elegant veining patterns more commonly associated with marble. This combination of beauty and toughness has made quartzite increasingly popular for kitchen countertops and high-traffic floors.

With a Mohs hardness of 7, quartzite is harder than granite (6-6.5) and dramatically harder than marble (3-4). It is composed almost entirely of quartz (SiO2), making it naturally acid-resistant - a critical advantage over marble for kitchen use. Red wine, lemon juice, and vinegar will not etch or damage quartzite. However, some stones sold as "quartzite" are actually dolomitic marble or soft marble mislabelled by suppliers. The vinegar test is essential: real quartzite shows zero reaction to acid.

Quartzite has relatively low porosity, though it does absorb some moisture, especially lighter-coloured varieties. Sealing is recommended but not as critical as for marble or limestone. The stone is frost-resistant and UV-stable, making it suitable for both interior and exterior applications across all European climates.