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Sichuan Grey Sandstone

Sichuan Grey SandstoneSichuan Grey SandstoneSichuan Grey SandstoneSichuan Grey SandstoneSichuan Grey SandstoneSichuan Grey Sandstone
Sichuan Grey Sandstone

Grey - Sandstone

China

About

Item Details

Material Type:
Sandstone
Origin:
China (Sichuan province)
Primary Color(s):
Grey
Recommended Usage:
Monuments, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, wall panels, reliefs, window sills, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces, cobbles, pavers, curbstone
Additional Names:
Grey Fine Grained Sandstone, Dior Grey Sandstone, Dior Coffee Grey Sandstone, Dior Cafe Grey Sandstone, in China stone market: 迪奥咖灰(Dí'ào Kāhuī), Sichuan Grey Sandstone
Finished Surface:
Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Combed,Leathered,Filled,Chiseled,Pickling

Testing

Water Absorption:
0.17–0.22% by weight
Density:
2620–2680 kg/m³
Flexural Strength:
14–18 MPa
Compressive Strength:
110–135 MPa

Description

Sichuan Grey Sandstone is a premium natural stone known for its uniform fine-grained texture and deep charcoal-to-dark gray coloration. Quarried from the Sichuan Province in southwest China, this sandstone exudes a contemporary, minimalist appeal, making it a favorite among architects and designers for both interior and exterior projects.

Its consistent grain, high compressive strength, and low porosity make it not only beautiful but also durable and low maintenance. It maintains its structural integrity even in harsh weather conditions, making it ideal for high-traffic areas, cladding, and landscaping applications.

Texture & Pattern:

  • Grain: Fine and consistent
  • Surface Texture: Smooth in honed or polished finish; slip-resistant in sandblasted, flamed, or bush-hammered finishes
  • Color: Uniform dark grey to charcoal with occasional light mineral specks
  • Pattern: Subtle layering typical of sedimentary stone; mostly homogenous appearance with minimal veining

Technical Specifications:

  • Water Absorption ... 0.17–0.22% by weight
  • Density ... 2.62–2.68 g/cm³ (2620–2680 kg/m³)
  • Compressive Strength ... 110–135 MPa
  • Flexural Strength ... 14–18 MPa
  • Hardness ... 6–7 Mohs
  • Porosity ... Low to medium (~5–8%)
  • Slip Resistance ... R11–R13 (depending on surface finish)

Chemical & Mineral Composition (% by weight):

  • Silicon Dioxide (SiO2) ... 65–75%
  • Aluminum Oxide (Al2O3) ... 10–15%
  • Iron Oxide (Fe2O3) ... 1.5–3.5%
  • Calcium Oxide (CaO) ... <1%
  • Magnesium Oxide (MgO) ... <1%
  • Minerals ... Quartz, feldspar, mica, clay minerals

Surface Finish Options (2cm / 3cm thickness standard):

  • Honed – Smooth matte finish, indoor floors and walls
  • Polished – Reflective surface (rare for sandstone)
  • Sandblasted – Fine anti-slip texture for exteriors
  • Bush-Hammered – Rough, high-grip surface for pavements
  • Flamed – Rough and weathered surface, ideal for wet zones
  • Natural Split (Cleft) – Rustic, hand-split traditional look
  • Brushed / Leathered – Textured but soft to touch

Applications:

  • Exterior cladding & facades
  • Walkways, pool decks & garden paving
  • Interior flooring & feature walls
  • Retaining walls and planters
  • Steps, coping stones, and wall caps
  • Public spaces & urban design projects

Maintenance:

Regular sweeping and mild water cleaning

Optional sealing to reduce moisture penetration and staining

Avoid acidic cleaners or harsh abrasives

Excellent performance in freeze-thaw cycles after sealing

FAQ

What is the average hardness of China's Sichuan Grey Sandstone?

There is no specific numerical average hardness available for Chinas Sichuan Grey Sandstone, as hardness can vary depending on the specific quarry and location within Sichuan province. However, sandstone typically falls within a range of 6-7 on the Mohs hardness scale.

Can China's Sichuan Grey Sandstone be used exterior applications in very rainy climates?

Chinas Sichuan Grey Sandstone can generally be used for exterior applications in rainy climates. However, it is important to consider a few factors before using it. Firstly, Sichuan Grey Sandstone is a natural stone, and while it is durable, it may have slight variations in porosity and absorption rates. It is crucial to select higher density and low porosity sandstone varieties for exterior applications, especially in very rainy climates. Secondly, the sandstone should be properly sealed and maintained to protect against water penetration and moisture-related issues. Applying a high-quality sealer can help to enhance the water resistance and prevent staining or deterioration due to constant exposure to rainwater. Lastly, ongoing maintenance is necessary to ensure the longevity of the sandstone. Regular cleaning, resealing when required, and addressing any minor issues promptly can help to mitigate potential problems caused by the rainy climate. Overall, while Sichuan Grey Sandstone can be used for exterior applications in very rainy climates, proper selection, sealing, and maintenance practices are crucial to extend its lifespan and maintain its appearance.

What is the coefficient of friction of Leathered China's Sichuan Grey Sandstone tiles?

It is not possible to provide the coefficient of friction for a specific product without more specific information or testing. The coefficient of friction can vary depending on factors such as the texture, finish, and surface treatment of the tiles. It is advisable to contact the manufacturer or supplier of the tiles for the coefficient of friction information.

Can China's Sichuan Grey Sandstone be used in floor coverings?

Yes, Chinas Sichuan Grey Sandstone can be used as a material for floor coverings. Sandstone is a sedimentary rock with a relatively high durability and resistance to wear, making it suitable for flooring applications. The grey color of Sichuan Grey Sandstone can provide a modern and natural aesthetic to any floor design. Additionally, its unique texture and pattern variations can add character and elegance to the space. However, it is important to consider factors such as sealing and regular maintenance to ensure the longevity and performance of the sandstone floor.

Are there color variations of China's Sichuan Grey Sandstone?

Yes, there are variations of Chinas Sichuan Grey Sandstone. While the primary color of Sichuan Grey Sandstone is gray, there can be slight variations in terms of shades and undertones. Some may have a cooler, more bluish-gray tone, while others may have a warmer, brownish-gray tone. Additionally, natural variations in color, veining, and texture are common in sandstone, so individual pieces can have unique characteristics.

Can China's Sichuan Grey Sandstone be used in a office?

Yes, Chinas Sichuan Grey Sandstone can be used in an office. It is a durable and versatile natural stone that can be used for flooring, walls, countertops, and other decorative elements. Its neutral grey color can complement various interior design styles, and its varying textures can add interest and depth to the space. However, it is important to ensure that the sandstone is sealed and properly maintained to prevent staining and damage.

How thick is China's Sichuan Grey Sandstone slabs?

I dont have access to the current inventory or information on Sichuan Grey Sandstone slabs. However, Sichuan Grey Sandstone typically, finds applications for both interior and exterior spaces, including flooring, wall cladding, vanity tops, and steps. The thickness of the slabs is mostly customized based on the project requirements, and common options are available 10mm, 15mm, 20mm, 30mm, and 40mm.

What grade is China's Sichuan Grey Sandstone?

I dont have information about the grading system of Chinas Sichuan Grey Sandstone. However, grey sandstone is classified based on its compressive strength and weather resistance. The grading system generally ranges from A to D grade. A higher grade indicates better quality and durability.

Can China's Sichuan Grey Sandstone be used outdoors?

Yes, Sichuan Grey Sandstone can be used outdoors as it is a durable and weather-resistant natural stone. It is commonly used for cladding, paving, landscaping, and outdoor decorations in various architectural projects. However, it is suggested to consult with a professional before making the final decision to ensure proper maintenance and longevity.

Is China's Sichuan Grey Sandstone an expensive stone?

I do not have access to real-time market data to determine the current price of Chinas Sichuan Grey Sandstone. However, in general, the price of Sichuan Grey Sandstone can vary depending on factors such as the size and quality of the blocks, location of the quarry, transportation costs, and supply and demand in the market. It is recommended that you check with a local supplier or distributor for the current price.

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