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Negro Real Granite

Negro Real Granite

Black - Granite

Portugal

About

Item Details

Material Type:
Granite
Origin:
Portugal (Borba, Évora District, Alentejo)
Primary Color(s):
Black
Recommended Usage:
kitchen and bathroom countertops, monuments, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, window sills, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces, pavers, cobbles, curbstone
Additional Names:
Nero Borba Granite, Granito Negro Borba, Granito Negro Real, Negro Real, Negro Real Granite
Finished Surface:
Polished,Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling

Testing

Density:
2680 - 2750 kg/m³
Flexural Strength:
12 - 15 MPa
Compressive Strength:
180 - 200 MPa
Stone texture:
fine- to medium-grained and evenly distributed, without strong veining, though occasional micro-speckling adds depth under light, a deep black natural stone characterized by a uniform to slightly speckled appearance, where the dominant dark background is subtly enriched with fine white and grey mineral flecks, creating a refined and elegant visual texture.

Description

Negro Real Granite is a remarkable natural stone known for its deep black color and refined texture, quarried in Borba, Évora District, Alentejo, Portugal. The stone's uniform appearance, enriched with fine white and grey flecks, makes it an elegant choice for various applications.

Physical and Mechanical Properties

  • Water Absorption: Low water absorption. Suitable for both indoor and outdoor use
  • Density: Approximately 2,680 - 2,750 kg/m³. High density contributes to its durability and strength
  • Flexural Strength: 12 - 15 MPa. Good resistance to bending, suitable for structural applications
  • Compressive Strength: 180 - 200 MPa. Can withstand high loads, ideal for countertops and flooring
  • Hardness: 6 - 7. Scratch-resistant, maintains a polished appearance over time
  • Porosity: Low. Less prone to staining and easier to maintain
  • Slip Resistance: Variable based on finish, generally good for polished and honed finishes. Safe for floors in both wet and dry conditions

Chemical and Mineral Compositions (% by weight)

  • Quartz: 20 - 30%. Provides hardness and resistance to weathering
  • Feldspar: 50 - 60%. Adds to the stone’s durability and stability
  • Biotite: 10 - 15%. Contributes to the black color and overall appearance
  • Other Minerals:  5 - 10%. Trace minerals add to the texture and speckling effect

Usage

  • Countertops
  • Flooring
  • Wall Cladding
  • Paving

Maintenance

  • Cleaning: Regular with pH-neutral cleaners. Avoid abrasive pads that may dull the surface.
  • Sealing: Periodic sealing recommended to sustain resistance against stains. 
  • Polishing: Professional polishing maintains its sheen over time.

Available Common Surface Finish Options

  • Polished
  • Honed
  • Flamed
  • Bush-Hammered

Negro Real Granite, with its distinctive deep black color, durability, and versatile application options, serves not only as a practical choice but also as a sophisticated enhancement to spaces where it is used.

FAQ

Can Portugal's Negro Real Granite be used in a bathroom?

Yes, Portugals Negro Real Granite can be used in a bathroom. Granite is a popular choice for bathroom countertops, vanity tops, and tiles due to its durability, heat and moisture resistance, and natural beauty. Negro Real Granite, specifically, is known for its dark black color with subtle white and grey veining, which can add a luxurious and elegant touch to any bathroom design. It is also a low-maintenance material that can withstand daily bathroom usage without easily scratching, staining, or chipping.

Can Portugal's Negro Real Granite be used exterior applications in hot climates?

Yes, Portugals Negro Real Granite can be used for exterior applications in hot climates. Granite is known for its durability and ability to withstand varying weather conditions, including high temperatures. It is resistant to heat and UV radiation, making it suitable for use in hot climates. However, it is always recommended to consult with a professional or supplier to ensure that the specific type of Negro Real Granite you have is suitable for your intended outdoor application.

Can Portugal's Negro Real Granite be used in landscaping?

Yes, Portugals Negro Real Granite can be used in landscaping. Granite is a durable and versatile material, known for its strength and resistance to weathering. It is commonly used in a variety of landscaping applications, including pathways, driveways, retaining walls, garden edging, and patio or terrace paving. The dark color and unique texture of Portugals Negro Real Granite can add visual interest and a sophisticated touch to outdoor spaces.

What is the coefficient of friction of Chiseled Portugal's Negro Real Granite tiles?

To determine the coefficient of friction of Chiseled Portugals Negro Real Granite tiles, you would need to consult the specifications provided by the manufacturer or supplier of the tiles. The coefficient of friction is a measure of the resistance to sliding between two surfaces, and it can vary depending on factors such as the surface finish, texture, and the presence of any sealants or coatings.

Can Portugal's Negro Real Granite be used outdoors?

Yes, Portugals Negro Real Granite can be used outdoors. Granite is a highly durable and weather-resistant material, making it suitable for outdoor applications such as paving, wall cladding, pool coping, and exterior facades. It is resistant to fading, staining, and scratching, and can withstand the harsh outdoor conditions, including freeze-thaw cycles and exposure to sunlight and rain. However, it is important to ensure that the granite is properly sealed and maintained to preserve its appearance and longevity.

How thick is Portugal's Negro Real Granite slabs?

I dont have access to real-time data or information. However, typically, the thickness of Portugals Negro Real Granite slabs ranges from 2 cm to 3 cm, depending on the requirements of the project.

What grade is Portugal's Negro Real Granite?

I dont have access to information on the grade of granite from Portugal. However, what I could find is that Negro Real is a type of black granite that is quarried in Portugal and widely used in construction and interior design. Its durability and elegant appearance make it a popular choice for countertops, flooring, and wall cladding.

Are there color variations of Portugal's Negro Real Granite?

I cannot provide a definitive answer to this question as granite can naturally vary in colors depending on the location and the geological conditions when it was formed. However, from my understanding, the basic color of Portugals Negro Real Granite is black with small white and gray specks.

Is Portugal's Negro Real Granite an expensive stone?

I dont have the current market price of the Portugals Negro Real Granite. However, the price of granite stones may vary depending on several factors such as quality, size, rarity, and source. Generally, granites are considered one of the expensive stones used for architectural and interior design purposes.

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