River Gray Marble

About
Item Details
- Material Type:
- Marble
- Origin:
China - Recommended Usage:
- Kitchen and bathroom countertops, wash basins, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces
- Additional Names:
- River Grey Marble, Grey River Marble, in China stone market:河流灰(Héliú Huī)
- Finished Surface:
- Polished,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling
Testing
- Water Absorption:
- 0.18–0.22 % (by weight)
- Density:
- 2680–2720 kg/m³
- Flexural Strength:
- 15–17 MPa
- Compressive Strength:
- 130–140 MPa
Description
River Gray Marble is a fine- to medium-grained natural stone featuring a muted grayish-green to light gray base color, highlighted by subtle, natural veining and speckled patterns. Its calm, understated aesthetic makes it suitable for both contemporary and classic interiors, providing a soft, elegant backdrop in flooring, wall cladding, countertops, and decorative architectural elements. This marble is quarried in China and is prized for its uniform texture, moderate hardness, and versatile application in residential, commercial, and public spaces.
Texture and Pattern
- Texture: Fine to medium crystalline grain, smooth to touch
- Pattern: Subtle veins and speckles, non-repetitive and organic
- Surface Character: Naturally soft patterns with muted color variation
- Color Variation: Light gray to grayish-green with soft tonal shifts
Technical Specifications
- Water Absorption: ~0.18–0.22 % (by weight)
- Density: ~2680–2720 kg/m³
- Flexural Strength: ~15–17 MPa
- Compressive Strength: ~130–140 MPa
- Mohs Hardness: 3–4
Chemical Composition (% by weight)
- CaCO₃: 94–97%,
- MgCO₃: 1–3%,
- Others: <2%
Mineral Composition (% by weight)
- Calcite: 94–96%,
- Aragonite: 1–3%,
- Quartz / others: <2%
* Values may vary slightly depending on quarry block and batch.
Surface Finish Options
- Polished (high-gloss)
- Honed (matte)
- Brushed Leathered (textured)
- Tumbled (rustic)
- Waterjet-cut patterns for decorative applications
Applications / Usage
- Interior flooring and wall cladding
- Countertops, vanity tops, and tabletops
- Fireplace surrounds and feature walls
- Staircases and thresholds
- Commercial interiors, hotels, and residential spaces
Maintenance
- Clean using pH-neutral stone cleaners
- Avoid acidic or abrasive chemicals
- Polished surfaces may require occasional polishing to maintain luster
- Sealing is recommended for wet areas or high-traffic zones





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