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Gris Negri Limestone

Gris Negri Limestone

Grey - Limestone

Italy

About

Item Details

Material Type:
Limestone
Origin:
Italy
Primary Color(s):
Grey
Recommended Usage:
planters, fountains, facade, urban street furnitures, building stone, ornamental stone, stairs, interior, exterior wall applications, mosaic, waterjet pattern, wall panels, table tops, balustrades, columns, wall and pool copings, pool pavers, fireplaces
Additional Names:
Grey Negri Limestone, Negri Grey Limestone, Azul Negri Limestone, Gris Negri, Gris Negri Limestone
Finished Surface:
Polished,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Combed,Leathered,Water Jet,Chiseled,Pickling

Testing

Water Absorption:
0.2 - 0.6%
Density:
2660 - 2700 kg/m³
Flexural Strength:
10 - 13 MPa
Compressive Strength:
80 - 100 MPa
Stone texture:
a striking mid-to-dark grey background enriched with complex organic patterns. Its surface features tightly compressed natural fossil formations and subtle mineral variations that give it exceptional depth compared to flat, solid greys

Description

Gris Negri Limestone is a distinguished type of natural stone quarried in Italy, known for its mid-to-dark grey background that is richly adorned with intricate organic patterns. This limestone stands out due to its tightly compressed natural fossil formations and its subtle mineral variations, which impart a remarkable depth that contrasts with the appearance of other more uniform, solid grey limestones.

Physical and Mechanical Properties

  • Water Absorption:Typically ranges between 0.2% to 0.6%.
  • Density:Approximately 2,660 to 2,700 kg/m³.
  • Flexural Strength:Typically ranges from 10 to 13 MPa.
  • Compressive Strength:Typically around 80 to 100 MPa.
  • Hardness:Generally falls around 3 to 4 on the Mohs scale.
  • Porosity:Low, approximately 1% to 3%.
  • Slip Resistance:Moderate to high depending on the surface finish, typically measured at 0.6 to 0.8 coefficient of friction for polished surfaces.

Chemical and Mineral Composition (% by Weight)

  • Calcium Carbonate (CaCO₃): 85% - 95%
  • Silica (SiO₂): 2% - 6%
  • Alumina (Al₂O₃): 0.5% - 2%
  • Iron Oxide (Fe₂O₃): 0.3% - 1.5%
  • Magnesium Oxide (MgO): 0.1% - 1%

Usage

  • Interior Applications: Flooring, wall cladding, countertops, staircases, and bathroom vanity tops.
  • Exterior Applications: Façades, outdoor paving, and landscaping elements.
  • Architectural Elements: Columns, balusters, and other decorative stone carvings.

Maintenance

  • Regular sealing is recommended to protect against stains and moisture.
  • Use pH-neutral cleaners to preserve the stone's natural beauty.
  • Avoid acidic or abrasive cleaning agents.

Cutting Sizes (cm)

  • Standard tiles: 30x30, 30x60, 40x40, 60x60
  • Slab Thickness: 2 cm, 3 cm
  • Custom sizes are available upon request and can be cut to meet specific architectural needs.

Available Common Surface Finish Options

  • Polished:Provides a high-gloss finish that enhances the stone's natural patterns and color.
  • Honed:Offers a smooth, matte finish, reducing reflectivity and providing a more natural look.
  • Brushed:Creates a textured finish, enhancing slip resistance while giving a rustic appearance.
  • Sandblasted:Produces a rough, gritty surface that increases traction.
  • Bush-Hammered:Yields a uniformly pitted surface with enhanced slip resistance, suitable for external applications.

Gris Negri Limestone's unique blend of strength, aesthetic appeal, and versatility makes it a popular choice for architects and designers seeking to create any environment, modern or classical, with enduring beauty and functionality.

FAQ

Can Italy's Gris Negri Limestone be used exterior applications in hot climates?

Yes, Italys Gris Negri limestone can be used for exterior applications in hot climates. Limestone is a durable and versatile natural stone that can withstand various weather conditions, including hot climates. However, it is essential to consider a few factors when using limestone in exterior applications: 1. Porosity: Limestone is a porous material, which means it can absorb moisture. In hot climates with high humidity or frequent rainfall, the limestone may be more prone to moisture absorption. It is crucial to choose a properly sealed or treated limestone to minimize water ingress. 2. Color fastness: Some limestone varieties, including Gris Negri, may have color variations. It is important to choose limestone that has good color fastness properties to withstand prolonged exposure to sunlight and prevent fading or discoloration. 3. Maintenance: Regular cleaning and maintenance are necessary to keep the limestone in good condition. In hot climates, dust, sand, and debris can accumulate on the surface more quickly. Proper cleaning and periodic resealing can help protect the limestone from weathering and maintain its appearance. Overall, Gris Negri limestone can be used for exterior applications in hot climates, but it is advised to consult with a professional or supplier who can provide specific guidance based on the local climate and conditions.

Can Italy's Gris Negri Limestone be used in wall coverings?

Yes, Italys Gris Negri Limestone can be used in wall coverings. Limestone is a durable and versatile material that can be used in various applications, including wall cladding and coverings. Gris Negri Limestone, with its unique grey color and natural beauty, can add a touch of elegance and sophistication to any interior or exterior wall.

What is the coefficient of friction of Water Jet Cut Italy's Gris Negri Limestone tiles?

It is not possible to determine the coefficient of friction of Water Jet Cut Italys Gris Negri Limestone tiles without specific data or testing. The coefficient of friction can vary depending on factors such as surface texture, finish, and presence of any additional coatings or treatments. It is recommended to consult with the manufacturer or supplier of the tiles for accurate information on the coefficient of friction.

Can Italy's Gris Negri Limestone be used in a bathroom?

Yes, Italys Gris Negri Limestone can be used in a bathroom. Limestone is a natural stone that is often used in bathroom applications such as countertops, flooring, shower walls, and backsplashes. However, it is important to note that limestone is a porous material and can be susceptible to stains and water damage if not properly sealed and maintained. It is recommended to consult with a professional stone supplier or installer to ensure that the limestone is suitable for your specific bathroom needs.

Is Italy's Gris Negri Limestone an expensive stone?

The price of Italys Gris Negri Limestone can vary depending on various factors such as quality, availability, and market demand. Generally, Italian limestone is considered to be a premium natural stone and is known for its high quality and unique characteristics. As a result, it tends to be priced in the higher range compared to other types of limestone. However, the actual price can only be determined by contacting a reputable supplier or retailer as they can provide specific information based on current market conditions.

What grade is Italy's Gris Negri Limestone?

Italys Gris Negri Limestone is typically classified as a high-quality natural stone of commercial grade. It is commonly used in construction and architectural projects for its durability and aesthetic appeal.

Can Italy's Gris Negri Limestone be used outdoors?

Yes, Italys Gris Negri Limestone can be used outdoors. Limestone is a durable and strong natural stone that can withstand various weather conditions, making it suitable for outdoor applications such as paving, landscaping, and cladding. However, it is essential to ensure that the limestone is properly sealed and maintained to prevent staining and weathering over time.

Are there color variations of Italy's Gris Negri Limestone?

Yes, there can be color variations in Italys Gris Negri Limestone. The stone typically has a grayish-blue color with some variations of brown and white throughout, but different batches or areas of extraction can have slightly different shades and patterns. The final appearance of the Gris Negri Limestone depends on the cut, finish, and installation method chosen.

How thick is Italy's Gris Negri Limestone slabs?

I do not have access to current information on Italys Gris Negri Limestone slabs. However, the thickness of limestone slabs can vary depending on the quarry and the intended use. It is best to contact a supplier or manufacturer for specific information on the thickness of Gris Negri Limestone slabs.

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