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Crystal Noir Quartzite

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Crystal Noir Quartzite

Quartzite

Brazil

About

Item Details

Material Type:
Quartzite
Origin:
Brazil
Recommended Usage:
kitchen and bathroom countertop, wash basins, building stone, ornamental stone, stairs, interior wall and floor applications, mosaic, water-jet pattern, wall panels, table tops, balustrades, columns, fireplaces, luxury furniture
Additional Names:
Cristallo Noir Quartzite, Crystal Black Quartzite, Crystal Noir Quartzite
Finished Surface:
Polished,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Combed,Leathered,Water Jet,Chiseled,Pickling

Testing

Water Absorption:
0.05 - 0.20%
Density:
2660 - 2700 kg/m³
Flexural Strength:
16 - 21 MPa
Compressive Strength:
180 - 200 MPa

Description

Crystal Noir Quartzite is an exotic Brazilian natural stone characterized by a deep midnight-black to charcoal-grey background dramatically intersected by sharp white crystalline veining and subtle golden mineral accents. It is a high-impact decorative quartzite widely used in luxury architecture for bold contrast surfaces and statement installations.

Visual Appearance & Color

  • Background Color: Deep midnight black to very dark charcoal grey
  • Primary Veining: Strong white crystalline veins, often angular or fractured in appearance
  • Secondary Accents: Occasional gold-toned mineral streaks and metallic flecks
  • Pattern Style: High-contrast, chaotic yet structured crystalline network
  • Visual Effect: Dramatic, luxurious, and high-energy composition with strong light reflection under polish
  • Overall Character: Bold, exotic, and architectural statement stone with premium visual impact

Texture & Structure

  • Rock Type: Quartzite (metamorphosed quartz sandstone)
  • Crystal Structure: Dense interlocking quartz grains with localized recrystallization zones
  • Surface Feel: Slightly granular in raw state; highly smooth and reflective when polished
  • Structural Behavior: Extremely compact, low porosity, and highly durable
  • Fracture Pattern: Conchoidal to irregular crystalline break lines typical of quartzite formations

Mineral Composition (% by weight)

  • Quartz (SiO₂): 90 – 96%
  • Feldspar: 1 – 4%
  • Mica (biotite/muscovite): 0.5 – 2%
  • Iron oxides (hematite/goethite): 0.5 – 1.5%
  • Accessory minerals (pyrite traces responsible for gold accents): <1%

Chemical Composition (% by weight)

  • Silicon Dioxide (SiO₂): 90 – 96%
  • Aluminum Oxide (Al₂O₃): 1 – 3%
  • Iron Oxide (Fe₂O₃): 0.5 – 1.5%
  • Potassium + Sodium Oxides: 0.5 – 2%
  • Trace elements (including sulfides/carbonates): <1%

Technical Test Results

  • Apparent Density: 2,660 – 2,700 kg/m³
  • Water Absorption: 0.05 – 0.20%
  • Flexural Strength: 16 – 21 MPa
  • Compressive Strength: 180 – 200 MPa
  • Abrasion Resistance: Very High
  • Impact Resistance: High
  • Freeze–Thaw Resistance: Excellent
  • Slip Resistance: Medium (higher in honed/leathered finishes)
  • Mohs Hardness: 7 Excellent scratch resistance due to high quartz content

Surface Finish Options

  • Polished (enhances black depth and white/gold contrast dramatically)
  • Honed (matte, soft architectural appearance)
  • Leathered (textured luxury finish with tactile depth)
  • Brushed (natural, slightly weathered effect)
  • Sandblasted (anti-slip exterior applications)

Recommended Applications

  • Luxury kitchen countertops and islands
  • Feature walls and fireplace surrounds
  • Hotel lobby flooring and reception walls
  • Bathroom vanities and shower cladding
  • High-end retail and commercial interiors
  • Statement staircases and elevator cladding
  • Architectural façades (selected finishes only)

Maintenance Guidelines

  • Clean with neutral pH stone cleaners only
  • Avoid acidic or bleach-based products
  • Seal recommended for long-term stain protection (especially in kitchens)
  • Wipe spills immediately (especially oils and colored liquids)
  • Use protective pads under hot objects
  • Regular maintenance preserves contrast and surface clarity

Performance Summary

Crystal Noir Quartzite combines extreme natural durability with a visually dramatic black-and-white crystalline structure enhanced by rare golden mineral inclusions. Its high quartz content ensures exceptional hardness and resistance, making it suitable for both heavy-use architectural applications and luxury decorative surfaces where visual impact is essential.

FAQ

Can Crystal Noir Quartzite be used for stair steps?

Yes, Crystal Noir Quartzite can be used for stair steps. Quartzite is a durable and hard natural stone, making it a suitable material for high-traffic areas like stairs. Its resistance to scratching and heat, as well as its aesthetic appeal, makes it a popular choice for both indoor and outdoor applications, including stair steps. However, its important to ensure that the surface is finished appropriately to prevent slipping and that its properly sealed to maintain its appearance and durability. Consulting with a professional installer or supplier can provide specific guidance on the suitability and maintenance of Crystal Noir Quartzite for your particular project.

Do fruit juices stain the surface of Crystal Noir Quartzite kitchen countertop?

Crystal Noir Quartzite is known for its durability and resistance to stains, but like many natural stones, it is not completely impervious to staining. Fruit juices can potentially stain the surface if they are not cleaned up promptly. The acidity and pigments in some fruit juices, such as those from berries, pomegranates, or citrus fruits, can penetrate the stones pores if left to sit, leading to potential staining. To protect your Crystal Noir Quartzite countertop, its advisable to: 1. **Seal the Surface:** Ensure the countertop is properly sealed. A good-quality sealant can help resist stains by preventing liquids from penetrating the stone. 2. **Clean Spills Immediately:** Wipe up any spills as soon as they occur. Use a soft cloth or paper towel to blot spills, rather than rubbing them, which can spread the liquid and increase the chance of staining. 3. **Use Mild Cleaners:** Clean the countertop regularly with mild soap and water or a cleaner specifically designed for natural stone. Avoid using harsh or abrasive cleaners that can damage the sealant or stone surface. 4. **Use Cutting Boards and Trays:** When preparing food, use cutting boards and trays to prevent direct contact between the countertop and acidic or staining substances. With proper care and maintenance, your Crystal Noir Quartzite countertop should remain attractive and resistant to most stains.

What type of abrasive should be used to polish the Crystal Noir Quartzite surface?

Polishing Crystal Noir Quartzite, or any quartzite, requires careful selection of abrasives to achieve the desired finish without damaging the surface. Quartzite is a very hard and durable stone, so you should typically use diamond abrasives for polishing. Heres a general guide: 1. **Diamond Pads or Discs**: Use diamond polishing pads or discs, which come in varying grit sizes. Start with a lower grit and gradually move to higher grits: - Begin with a coarser grit, such as 50 or 100, for initial smoothing or removing minor scratches. - Progress through intermediate grits (e.g., 200, 400, 800) to refine the surface. - Finish with higher grits, such as 1500 or 3000, for a glossy finish. 2. **Wet Polishing**: Wet polishing is typically recommended for quartzite to keep the surface cool and control dust. Ensure that your pads are suitable for wet use. 3. **Polishing Powder (Optional)**: After using diamond pads, you can apply a polishing powder designed for natural stone to achieve a high-gloss finish. Use a buffing pad in conjunction with the powder. Always test your polishing method on a small, inconspicuous area first to ensure the desired outcome. Additionally, follow the manufacturers recommendations for both the polishing equipment and the specific quartzite youre working with, as techniques may vary slightly based on the stones properties.

Is Crystal Noir Quartzite durable enough for use as walkway pavers?

Crystal Noir Quartzite is generally quite durable and can be suitable for use as walkway pavers. Quartzite, in general, is a hard, metamorphic rock that originates from sandstone and is known for its durability and resistance to weathering. However, there are a few factors you should consider before choosing Crystal Noir Quartzite for walkway pavers: 1. **Texture and Finish**: The surface finish can affect slip resistance, especially when wet. A honed or textured finish may provide better grip compared to a polished finish. 2. **Thickness**: Ensure the quartzite is of adequate thickness to withstand foot traffic and any potential weight from objects like outdoor furniture. Thicker slabs will generally be more durable. 3. **Installation**: Proper installation is crucial for the durability of any stone paver. This involves a stable base, proper drainage, and correct alignment. 4. **Climate**: Consider the climate where you are installing the pavers. Quartzite is resistant to heat and cold, but extreme freeze-thaw cycles can still cause problems if water gets into any cracks. 5. **Maintenance**: While quartzite is low maintenance, regular cleaning and occasional sealing can help preserve its appearance and integrity over time. If these conditions are met, Crystal Noir Quartzite can be a long-lasting and aesthetically pleasing choice for walkway pavers.

Does the surface of Crystal Noir Quartzite scratch easily?

Crystal Noir Quartzite, like other types of quartzite, is generally quite durable and resistant to scratching. Quartzite ranks high on the Mohs hardness scale, usually between 7 and 8, making it harder than many other natural stones, such as granite and marble. This natural hardness gives quartzite surfaces good resistance to scratching and etching that might occur under regular use. However, while quartzite is very resilient, it is not entirely scratch-proof. Using cutting boards and avoiding dragging heavy or sharp objects across its surface can help maintain its appearance. Regular cleaning and sealing might also be recommended to protect and prolong the life of the surface.

Can 2cm thick Crystal Noir Quartzite be used for pool coping?

Yes, 2cm thick Crystal Noir Quartzite can be used for pool coping, but there are a few considerations to ensure its suitability and longevity. Quartzite is a durable and hard natural stone, making it a suitable material for outdoor applications like pool coping. However, you should consider the following factors: 1. **Durability:** Quartzite is known for its hardness and resistance to weathering. It is suitable for areas with heavy foot traffic and exposure to water. 2. **Slip Resistance:** Consider the finish of the quartzite. A honed or textured finish might provide better slip resistance compared to a highly polished finish, which can be slippery when wet. 3. **Installation:** Proper installation is crucial. Ensure that the stone is securely set, with appropriate adhesives and supported well to prevent any movement or cracking. 4. **Sealant:** Using a high-quality sealant can help protect the stone from staining and ease maintenance, particularly given the exposure to pool chemicals. 5. **Maintenance:** Regular cleaning and periodic resealing can help maintain the appearance and integrity of the quartzite over time. 6. **Color and Heat Absorption:** Darker colors may absorb more heat, which could make them uncomfortable to walk on barefoot. Consider this aspect depending on your climate and the color of the quartzite. Consult a professional installer or a stone specialist to ensure that Crystal Noir Quartzite is the right choice for your specific project requirements.

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