G840 Granite

About
Item Details
- Material Type:
- Granite
- Origin:
China - 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:
- Juparana Red Granite, China Multicolor Red 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
- Water Absorption:
- 0.15% – 0.40%
- Density:
- 2650–2730 kg/m³
- Flexural Strength:
- 12–18 MPa
- Compressive Strength:
- 170–200 MPa
Description
Texture & Visual Pattern
G840 Granite is known for its bold, painterly appearance — a natural canvas where colors sweep and collide like mineral currents frozen in motion. Its texture is:
- Medium to coarse crystalline grain
- High-density interlocking quartz–feldspar matrix
- Distinct swirling patterns with dramatic movement
- Multicolored palette including:
- Deep reds Rich purples
- Smoky greys
- Carbon black streaks
- Occasional cream–beige clouds
The overall impression is dynamic and luxurious, often chosen for projects that require a statement surface.
Physical & Mechanical Test Results
(Typical values for this granite type; final results vary slightly per block)
- Density: 2,620–2,750 kg/m³
- Water Absorption: 0.15% – 0.40%
- Porosity: Very low
- Compressive Strength: 150–220 MPa
- Flexural Strength: 12–18 MPa
- Mohs Hardness: 6–7
- Impact Resistance: High
- Weather Resistance: Excellent (suitable for exterior use)
Chemical Composition (% by weight, typical)
- SiO₂ (Silica): 60–73%
- Al₂O₃ (Alumina): 13–18%
- K₂O + Na₂O (Alkalis): 4–8%
- Fe₂O₃ + FeO (Iron Oxides): 2–5%
- CaO + MgO: 1–4%
Trace minerals (biotite, amphibole, hematite, feldspar) are responsible for its red-purple tones and swirling motion.
Usage Applications
G840 Granite’s dramatic colors make it suitable for projects where a bold, artistic presence is desired:
Interior Applications
- Kitchen countertops
- Bathroom vanity tops
- Flooring Feature walls
- Fireplace surrounds
- Tabletops and bar counters
Exterior Applications
- Facade cladding
- Paving
- Outdoor steps
- Monuments
- Landscaping elements
Weathering resistance makes it ideal for both indoor and outdoor architectural work.
Maintenance
Even with its strength, proper care keeps it pristine:
- Seal once every 12–18 months
- Clean with pH-neutral stone cleaner
- Avoid acids or bleach
- Use cutting boards and coasters
- Wipe spills immediately to avoid staining (common for polished surfaces)
- Routine cleaning maintains shine and prevents dulling.





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