Dumont Quartzite is a refined natural quartzite quarried in Brazil, distinguished by its elegant, luminous appearance and strong metamorphic structure. The stone features a predominantly bright white to off-white background, often enhanced with subtle crystalline reflections, while delicate flowing veins of light gray to silvery tones traverse the surface in graceful patterns. These veins move organically across the slab, ranging from fine hairline streaks to broader, interconnected lines that create a natural sense of movement and depth. The texture and structure are dense, compact, and crystalline due to the metamorphic transformation of sandstone into quartzite, giving the material a slightly sparkling surface under light and a uniform yet visually dynamic pattern. The combination of its bright base color and refined veining makes Dumont Quartzite particularly valued for modern architectural and luxury interior design applications.
Typical Physical and Mechanical Test Results (approximate values):
- Apparent Density: 2.66–2.70 g/cm³
- Water Absorption: 0.10–0.30 % by weight
- Compressive Strength: 180–230 MPa
- Flexural Strength: 15–22 MPa
- Abrasion Resistance: 18–22 mm
- Impact Resistance: 45–60 cm
- Frost Resistance: Excellent, suitable for exterior applications
- Mohs Hardness: approximately 6.5–7.0, reflecting the high quartz content and making the stone highly resistant to scratching.
Chemical Composition (% by weight):
- Silicon Dioxide (SiO₂): 92–97 %
- Aluminum Oxide (Al₂O₃): 1–3 %
- Iron Oxide (Fe₂O₃): 0.2–0.8 %
- Calcium Oxide (CaO): 0.1–0.5 %
- Potassium Oxide (K₂O): 0.2–0.6 %
- Trace minerals and oxides: <0.5 %
Mineralogical Composition (% by weight):
- Quartz: 90–96 %
- Feldspar: 2–5 %
- Mica (muscovite/biotite): 0.5–2 %
- Iron-bearing minerals and other trace inclusions: <1 %
Usage:
Due to its durability, hardness, and elegant coloration, Dumont Quartzite is widely used in both interior and exterior architectural applications, including kitchen countertops, bathroom vanities, wall cladding, flooring, staircases, fireplace surrounds, feature walls, and luxury commercial spaces. Its resistance to wear and weathering also makes it suitable for facades, outdoor paving, and landscape features.
Maintenance:
Although quartzite is highly durable, surfaces benefit from periodic sealing to protect against staining and enhance longevity. Cleaning should be done using pH-neutral stone cleaners and soft cloths. Avoid harsh acids or abrasive cleaners. Routine wiping and occasional resealing help maintain the stone’s natural brightness and polished finish.
Surface Finish Options:
- Polished – highlights the stone’s crystalline sparkle and veining contrast
- Honed – smooth matte finish for a softer, contemporary appearance
- Leathered / Brushed – lightly textured surface that enhances the stone’s natural structure
- Flamed – textured finish often used for exterior paving or cladding
- Sandblasted – slip-resistant surface for outdoor applications
With its clean white background, graceful silver-gray veining, and exceptional hardness, Dumont Quartzite combines the visual elegance of marble with the strength of quartzite, making it a highly desirable material for sophisticated architectural and design projects.
Brazil
United States
India
