Khorram Darreh Granite

Khorram Darreh Granite, quarried in Zanjan Province, Iran, is a high-performance natural stone valued for its distinctive color palette and robust technical characteristics . Available in grey, chocolate, and golden tones, this granite is a versatile choice for architects and contractors . With low water absorption (as low as 0.13% and up to 0.9%), high compressive strength (65 to 71 MPa), and good abrasion resistance, it is suitable for demanding environments . It is processed in polished, flamed, leathered, or natural finishes, offering flexibility for different design requirements and a variety of interior and exterior applications .

Key Technical Features

Khorram Darreh Granite is characterized by high density, low porosity (~0.42%), and excellent durability in various environmental conditions . Its low water absorption (ranging from 0.13% to 0.9%) makes it a reliable option for long-term use . This granite is available in several grades, from Commercial to Super and Export Grade . While providing high compressive strength (65 to 71 MPa), the natural variations in color and grain patterns are inherent to the stone, meaning slight differences in tone and texture may occur between different batches . For exterior facade installations, it is professionally recommended to design specific mechanical fastening systems to ensure long-term stability and safety .

Architectural Applications

This granite is widely used in various construction and design projects. Its primary applications include:

• Flooring: Indoor and outdoor paving, including high-traffic commercial spaces, parking lots, and sidewalks .
• Staircases and Steps: Suitable for both interior and exterior steps due to its strength and resistance to abrasion .
• Building Facades: Used for external cladding, but installation requires specific mechanical systems .
• Interior Surfaces: Wall cladding, kitchen countertops, and other interior decorative elements .

Comparison of Khorram Darreh Granite with Similar Products

This comparison table helps contractors, architects, and property owners evaluate technical specifications, applications, and physical properties side-by-side to select the most suitable granite for their specific architectural requirements.

Which one should you choose?

• If high compressive strength for heavy-duty commercial flooring is important, Titanium Granite Brazil is more suitable, though its imported origin and specific dark aesthetic come with higher material complexity.
• If a veined texture with diverse color options such as dark green or yellow is required for decorative interior spaces, Picasso Granite Stone is more suitable, while noting that its veined structure requires careful matching during installation.
• If a balanced domestic granite with reliable gray and gold tones for general flooring and facade is needed, Khorram Darreh Granite is more suitable, keeping in mind that its physical properties vary slightly across different extraction grades.
• If unique turquoise and copper visual accents with distinct mineral patterns are desired, Turquoise Granite is more suitable, though its water absorption range requires proper sealing in wet environments.
• If an exceptional green jade tone with very high abrasion resistance is required for heavy traffic zones, Delicate Granite Stone is more suitable, noting that availability in thicker dimensions may vary by batch.

Selection and Installation Considerations

When selecting Khorram Darreh Granite for professional architectural or construction projects, please consider the following technical and aesthetic factors:

• Summary: Khorram Darreh Granite originates from Zanjan, Iran, featuring a granular texture with colors ranging from Gray and Brown to Gold and Blue-Gray. It is highly versatile, suitable for both indoor and outdoor applications, including modern facades, commercial flooring, and staircase cladding.
• Batch Variations: As a natural stone, color, texture, and pattern variations between different batches are expected. We recommend inspecting physical samples to ensure alignment with your design intent before finalizing the order.
• Grade Selection: Depending on your project requirements, choose between available grades (Super, Grade 1, Grade 2, or Commercial). Please note that lower-grade sorts may exhibit more pronounced natural characteristics, such as darker nodules or visible mineral variations.
• Facade Installation: Due to the stone's high density and weight, traditional mortar-based installation is not recommended for exterior facades. To ensure structural safety and long-term stability, it is essential to use mechanical fastening systems (such as stainless steel anchors or specialized bracket systems) designed for heavy-duty stone cladding.
• Surface Application: While the stone is highly durable, the choice of finish (Polished, Flamed, Leathered, or Natural) should match the specific environment, especially regarding slip resistance for flooring or aesthetic requirements for feature walls.

Selection and Maintenance Guide

Choose Khorram Darreh Granite according to the project’s exposure, traffic, design intent, and installation method. The stone is suitable for both indoor and outdoor applications, including facades, flooring, walls, and stairs.

• Review the actual batch: Natural granite is unique. Variations in color, veining, and texture are inherent. We recommend inspecting a physical sample from the specific batch before confirming your order, as images may not fully capture the exact color and texture of the delivered stone.
• Select the appropriate finish and processing: Available finishes include Polished, Flamed, Leathered, and Natural. Depending on the application—such as a non-slip exterior facade or a high-gloss interior lobby—select the processing (Cut, Calibrated, Polished, or Epoxy Treated) that meets your project's technical and aesthetic requirements.
• Match the format to the application: This granite is available in Tile, Slab, Stair, and Facade formats, with standard thicknesses of 2 cm and 3 cm. Ensure the dimensions and formats are clearly specified in your inquiry to match the project's architectural design.
• Ensure engineered facade installation: For exterior cladding, do not rely on mortar alone. Because of the stone's weight and environmental exposure, a qualified technical team must design and review a suitable mechanical fastening system to ensure long-term stability and safety.
• Maintenance and care: To preserve the stone's surface, use pH-neutral cleaners and avoid acidic or abrasive substances. For outdoor or high-traffic areas, regular maintenance according to the selected finish is recommended to maintain its appearance.
• Logistics and site handling: Loading, transportation, unloading, and insurance are the buyer's responsibility. The buyer selects the carrier; we can provide technical guidance if needed. Please inspect the quantity, dimensions, and quality upon arrival, as claims regarding these items cannot be accepted once the shipment has been loaded and dispatched.

Frequently Asked Questions

How can I ensure the color matches my design?

Due to the natural mineral composition of Khorram Darreh Granite, variations in color (ranging from gray and brown to gold and blue-gray), veining, and texture between different batches are inherent. We recommend requesting a physical sample from the specific batch intended for your project to verify the appearance and characteristics.

Is it suitable for high-traffic commercial areas?

Yes. With a compressive strength ranging from 65 to 71 MPa and high abrasion resistance, this granite is highly suitable for heavy-duty applications such as office lobbies, commercial flooring, and public areas. For high-traffic flooring, we recommend selecting a finish like Polished or Honed.

How do I receive a final price and order?

Please provide our technical experts with your required dimensions, thickness (2 cm or 3 cm), finish, and quantity. We will issue a proforma invoice for your review. Once the final invoice is issued, the price is valid for 3 working days, and payment must be made via bank transfer to the account specified on the invoice.

What are the main differences between batches?

As a natural stone, every batch of Khorram Darreh Granite is unique. Differences in color shades, grain size, and vein patterns are normal and expected. Checking a physical sample from the specific batch helps ensure it meets your project's aesthetic expectations.

What is the best application for this granite?

Its high compressive strength and durability make it ideal for both indoor and outdoor use, including modern facades, commercial flooring, stairs, and decorative wall cladding. For exterior facades, a flamed or leathered finish is often preferred for better grip and weather resistance.

How do I inquire about a quote?

Simply send us your project specifications, including thickness (2 cm or 3 cm), finish, and total quantity. Our experts will provide a proforma invoice within 2 working days. Note that the final price is confirmed only upon issuing the official invoice.

Inquiry and Ordering

To request an inquiry, please provide the project location, intended application, required finish, format, thickness, and estimated quantity. Our technical team will provide a proforma invoice for your review. Please note that the proforma is a preliminary estimate; the final price is confirmed upon the issuance of the official invoice and remains valid for 3 working days. Payment is exclusively handled via bank transfer to the account specified on the final invoice.