Kelardasht Granite: Technical Specifications & Applications
Kelardasht Granite, extracted from the Diochal mine in Iran's Mazandaran province, is a durable natural stone with a granular texture and a distinctiv...
Where to use Kelardasht Granite: Technical Specifications & Applications
Kelardasht Granite, quarried in the Kelardasht region (specifically the Divchal quarry) of Iran, is a prestigious natural stone distinguished by its pink to silver-gray hues and granular texture. With a compressive strength ranging from 138.2 to 149.1 MPa and a density of 2650 kg/m³, it is exceptionally durable and suitable for demanding applications. The stone's water absorption is approximately 1.16%; while this makes it a versatile option for various environments, professional sealing is recommended for projects requiring lower permeability or strict adherence to standards like ASTM C97 or ISIRI 5694.
Key Characteristics of Kelardasht Granite
The versatility and performance of Kelardasht Granite are derived from its distinct physical and visual properties:
- Aesthetic Range: Offers a beautiful spectrum from pink to silver and gray, featuring a consistent granular pattern that provides visual depth to large architectural surfaces.
- High Compressive Strength: With a strength of 138.2 to 149.1 MPa, it provides high structural reliability for load-bearing applications and heavy-duty usage.
- Finish Versatility: The stone can be processed into a wide variety of finishes—including polished, flamed, bush hammered, tumbled, honed, leathered, and sandblasted—to suit different design requirements.
- Abrasion Resistance: It maintains an abrasion resistance of approximately 3.1 - 3.2 g/cm², making it suitable for both high-traffic flooring and exterior cladding.
- Water Absorption Note: With a water absorption rate of 1.16%, it is higher than some other granite varieties (such as Natanz Granite, which is below 0.29%). For projects requiring lower permeability, we recommend professional sealing.
Architectural Applications
Thanks to its robust nature and aesthetic appeal, Kelardasht Granite is employed in a multitude of applications:
- Facades (Interior & Exterior): An ideal material for both contemporary and classic building facades, including modern minimalist and Roman-style designs.
- High-Traffic Flooring: Suitable for commercial lobbies and public areas due to its high durability and resistance to wear.
- Staircases & Decorative Elements: Provides both aesthetic elegance and structural reliability for stairs and ornamental features.
- Kitchen Countertops & Vanities: Its density makes it a functional choice for residential and commercial kitchen environments.
- Monuments & Water Features: Its endurance makes it suitable for memorials and complex waterjet patterns.
Kelardasht Granite compared with similar products
This technical comparison helps architects and contractors select the most suitable granite based on specific project requirements such as moisture exposure, load-bearing needs, and aesthetic goals. Note that technical values like water absorption and compressive strength may vary depending on the specific quarry batch and joint configuration.
| Property | Kelardasht Granite | Natanz White Granite | Nehbandan Granite | Borujerd Granite Stone | Serkan Black Granite |
|---|---|---|---|---|---|
| Stone type | Granite | Granite | Granite | Granite | Granite |
| Quarry / origin | کلاردشت, مازندران (معدن دیوچال) | نطنز, استان اصفهان (معادن لاگهر, شفق, ابیانه) | نهبندان, خراسان جنوبی | بروجرد, استان لرستان | نطنز, استان اصفهان |
| Texture | Granular | Granular | Granular | Granular | Granular |
| Suitable space | Indoor & Outdoor | Indoor & Outdoor | Indoor & Outdoor | Indoor & Outdoor | Indoor & Outdoor |
| Colors | Pink, Silver, Gray | White, Gray, Light Gray | Gray, Cream, Orange, Pink, White | Cotton White, Light Gray, Black (Grains) | Black |
| Applications | Modern Facade Stone, Roman Facade Stone, Interior Facade Stone, Building Exterior Facade Stone, Wall Stone (Partition or Interior Facade), Office & Commercial Flooring Stone, Home Flooring Stone, General Flooring Stone, Slab Stone, Stair Stone, Main Building Facade, Roman & Classic Facades, Modern Minimalist Facade with Light Stone, Window Frames, Columns & Capitals, Facade Stone Tools, Interior Lobby & Common Area Walls, Staircase Walls or Decorative Spaces | Modern Facade Stone, Roman Facade Stone, Interior Facade Stone, Building Exterior Facade Stone, Wall Stone (Partition or Interior Facade), Parking Floor Stone, Office & Commercial Flooring Stone, Home Flooring Stone, Yard Floor Stone, General Flooring Stone, Elevator Cabin Floor Stone, Slab Stone, Cabinet Stone, Bathroom Stone, Stair Stone, Tombstone, Main Building Facade, Roman & Classic Facades, Modern Minimalist Facade with Light Stone, Window Frames, Columns & Capitals, Facade Stone Tools, Interior Lobby & Common Area Walls, Staircase Walls or Decorative Spaces | Modern Facade Stone, Roman Facade Stone, Interior Facade Stone, Building Exterior Facade Stone, Wall Stone (Partition or Interior Facade), Parking Floor Stone, Office & Commercial Flooring Stone, Home Flooring Stone, Yard Floor Stone, General Flooring Stone, Elevator Cabin Floor Stone, Slab Stone, Cabinet Stone, Bathroom Stone, Stair Stone, Tombstone, Main Building Facade, Roman & Classic Facades, Modern Minimalist Facade with Light Stone, Window Frames, Columns & Capitals, Facade Stone Tools, Interior Lobby & Common Area Walls, Staircase Walls or Decorative Spaces | Modern Facade Stone, Interior Facade Stone, Building Exterior Facade Stone, Wall Stone (Partition or Interior Facade), Parking Floor Stone, Office & Commercial Flooring Stone, Home Flooring Stone, General Flooring Stone, Slab Stone, Cabinet Stone, Stair Stone, Main Building Facade, Modern Minimalist Facade with Light Stone, Window Frames, Interior Lobby & Common Area Walls, Staircase Walls or Decorative Spaces | Modern Facade Stone, Interior Facade Stone, Building Exterior Facade Stone, Wall Stone (Partition or Interior Facade), Office & Commercial Flooring Stone, Home Flooring Stone, General Flooring Stone, Slab Stone, Stair Stone, Main Building Facade, Interior Lobby & Common Area Walls, Staircase Walls or Decorative Spaces |
| Finish type | Polished, Flamed, Hammered, Tumbled, Brushed, Honed, Leathered, Sandblasted, Natural, Split, Combed | Polished, Leathered, Honed, Flamed, Sandblasted | Polished, Honed, Bush Hammered, Flamed, Tumbled, Sandblasted, Brushed | Polished, Leathered, Flamed | Polished, Leathered, Honed |
| Processing type | Cut, Calibrated, Polished, Acid Washed, Epoxy Treated, Resin Treated | Cut, Calibrated, Polished, Epoxy Treated | Cut, Calibrated, Polished, Epoxy Treated | Polished, Calibrated, Epoxy Treated | Cut, Polished, Calibrated |
| Grades | Super, Export Grade, Grade 1, Commercial | Super, Grade 1, Grade 2, Export Grade | Super, Premium, Grade 1, Commercial Grade | Super, Grade 1, Grade 2, Commercial | Grade 1, Grade 2, Super, Export Grade |
| Thicknesses | 2 cm, 3 cm, 1 cm | 2 cm, 3 cm, 1.5 cm, 4 cm | 2 cm, 3 cm | 2 cm, 3 cm | 2 cm, 3 cm |
| Dimensions | تایل: تایل, اسلب: اسلب, پله: پله, نما: نما | تایل: تایل, اسلب: اسلب, طولی: طولی, پله: پله, نما: نما | تایل: تایل, اسلب: اسلب, پله: پله, نما: نما | تایل: تایل, اسلب: اسلب, پله: پله, نما: نما | تایل: تایل, اسلب: اسلب, پله: پله, نما: نما |
| Water absorption | Requires additional testing (varies based on joints) | 0.06 - 0.29 percent (very low) | 0.05 - 0.08 percent | Less than 1 percent (on average) | 0.03 percent (very negligible) |
| Compressive strength | Requires additional testing (joint observation is effective) | 1100 - 1177 kg/cm² (107 - 115 MPa) | 145 - 146 MPa | Approximately 1160 kg/cm² (varies by quarry) | Approximately 1480 kg/cm² (145 MPa) |
| Abrasion resistance | Suitable for floors (with joint selection of Jv<10) | Grade 3 (excellent - suitable for high-traffic floors) | 3.1 - 3.2 g/cm² | High - suitable for high-traffic floors and exterior facades | 4 (excellent grade) |
| Porosity | Requires additional testing | 0.14 percent (very low) | 0.18 percent | Low (proportional to water absorption less than 1%) | Slight (less than 0.5%) |
Technical Specifications of Kelardasht Granite
The technical data provided below is based on available laboratory testing and registry records. For critical architectural specifications or project-specific compliance (such as ASTM C97 or ISIRI 5694), please request a detailed technical data sheet (TDS) when inquiring about your order.
| Property | Value |
|---|---|
| Stone type | Granite |
| Quarry / origin | کلاردشت, مازندران (معدن دیوچال) |
| Texture | Granular |
| Suitable space | Indoor & Outdoor |
| Colors | Pink, Silver, Gray |
| Applications | Modern Facade Stone, Roman Facade Stone, Interior Facade Stone, Building Exterior Facade Stone, Wall Stone (Partition or Interior Facade), Office & Commercial Flooring Stone, Home Flooring Stone, General Flooring Stone, Slab Stone, Stair Stone, Main Building Facade, Roman & Classic Facades, Modern Minimalist Facade with Light Stone, Window Frames, Columns & Capitals, Facade Stone Tools, Interior Lobby & Common Area Walls, Staircase Walls or Decorative Spaces |
| Finish type | Polished, Flamed, Hammered, Tumbled, Brushed, Honed, Leathered, Sandblasted, Natural, Split, Combed |
| Processing type | Cut, Calibrated, Polished, Acid Washed, Epoxy Treated, Resin Treated |
| Grades | Super, Export Grade, Grade 1, Commercial |
| Thicknesses | 2 cm, 3 cm, 1 cm |
| Dimensions | تایل: تایل, اسلب: اسلب, پله: پله, نما: نما |
| Water absorption | ~1.16% (Note: exceeds ASTM C97/ISIRI 5694 limits) |
| Compressive strength | 138.2 – 149.1 MPa |
| Abrasion resistance | Suitable for floors (Recommended joint selection Jv<10) |
| Porosity | Requires additional testing |
Pros and Cons of Kelardasht Granite
Understanding the technical characteristics of Kelardasht Granite is essential for ensuring its suitability for your specific architectural requirements.
Pros
- Visual Versatility: The available color palette (pink, silver, gray) allows for seamless integration into both modern minimalist and classic Roman designs.
- High Compressive Strength: With strength reaching up to 149.1 MPa, it meets high-performance requirements for commercial and residential structural applications.
- Finish Adaptability: Can be processed into a wide range of finishes—from polished to flamed—to suit different aesthetic and slip-resistance needs.
Cons
- Mitigation: To maintain long-term durability and meet standards such as ASTM C97 or ISIRI 5694 (max 0.4%), we recommend professional-grade sealing and careful joint management during installation.
Selection and Installation Considerations
To ensure the long-term performance of Kelardasht Granite, professional guidance is recommended when addressing its specific geological properties:
- Material Selection and Quarry Integrity: The stone's durability is closely linked to the structural integrity of the quarry blocks. It is critical to inspect the material for micro-fractures that could impact performance under load.
- Finish and Slip Resistance: The chosen finish must match the project's environmental requirements. For interior flooring, polished or honed finishes provide a high-end aesthetic. For outdoor or high-traffic zones, a flamed, bush-hammered, or sandblasted finish is recommended to enhance slip resistance.
- Moisture Management and Sealing: Kelardasht Granite has a measured water absorption rate of approximately 1.16%, which is higher than the 0.4% threshold specified by ASTM C97 and ISIRI 5694. To mitigate potential staining and weathering, applying a high-quality, penetrating sealer is a recommended professional practice, especially for outdoor applications.
- Joint Selection and Installation: For flooring, particularly in moisture-prone environments, selecting joints with low water absorption (Jv < 10) is a key technical consideration to improve overall surface performance.
Frequently Asked Questions (FAQ)
Is Kelardasht Granite suitable for outdoor facades?
Yes, its high compressive strength (ranging from 138.2 to 149.1 MPa) makes it an excellent choice for structural facades. However, as its water absorption (~1.16%) exceeds the ASTM C97 and ISIRI 5694 standard of 0.4%, we recommend professional sealing to enhance protection against environmental weathering and moisture penetration.
How should I maintain the polished finish?
To preserve the stone's luster and prevent surface degradation, use only pH-neutral cleaners. Avoid all acidic substances, as they can cause chemical etching on the granite surface.
Conclusion
Kelardasht Granite is a high-performance natural stone that combines visual elegance with exceptional compressive strength. Its versatility makes it a reliable choice for both sophisticated interior designs and demanding exterior architectural projects, provided that professional installation and sealing practices are followed.
| Stone Type | Granite |
| Suitable for | Indoor & Outdoor |
| Texture | Granular |
| Mine | Kelardasht, Mazandaran (Divchal Quarry) |
| Colors | Pink، Silver، Gray |
| Qualities | Super، Export Grade، Grade 1، Commercial |
| Thicknesses | 2 cm، 3 cm، 1 cm |
| Compressive | Requires additional testing (joint observation is effective) |
| Abrasion | Suitable for floors (with joint selection of Jv<10) |
| Water Abs. | Requires additional testing (varies based on joints) |
| Porosity | Requires additional testing |
Where is Kelardasht Granite quarried and what mineral background defines it?
Kelardasht Granite originates from the Diochal mine located in the Kelardasht area of Iran's Mazandaran province. It features a distinctive granular texture accompanied by a characteristic pink to silver-gray color spectrum.
What surface finishes can be specified for Kelardasht Granite projects?
This stone accommodates diverse surface processing options, including polished, flamed, bush hammered, tumbled, honed, leathered, and sandblasted finishes. Specifiers can tailor textures according to indoor aesthetic requirements or outdoor slip-resistance demands.
Which architectural surfaces are best matched to Kelardasht Granite?
Thanks to its resilient structure and aesthetic depth, this granite is widely used for interior and exterior facades, high-traffic commercial flooring, staircases, decorative wall cladding, and vanity surfaces.
What technical factors must be evaluated prior to selecting quarry blocks of Kelardasht Granite?
Block soundness depends heavily on joint distribution and internal fractures in the rock mass. Professional inspection of quarry blocks is necessary before processing to ensure structural integrity across final architectural elements.
What maintenance measures are advised for exterior installations of Kelardasht Granite?
Applying an appropriate sealer is strongly recommended for exterior cladding and paving. Periodic sealing protects the stone against prolonged environmental weathering while preserving its natural color over long service periods.
