In modern luxury design and high-end commercial architecture, selecting materials that offer a dramatic visual impact is essential. Golden Black Marble (known geologically as a metamorphic rock formed by the recrystallization of limestone under intense tectonic heat and pressure) is one of the most prestigious natural stones in the global market. Characterized by its deep, carbon-black background intersected by sharp golden-caramel and crisp white veins, this material provides a striking contrast that instantly elevates lobby walls, floors, and vanity features.
At SherkatStone, we source and distribute premium-grade Golden Black Marble directly from the most reputable quarries in the Kashan region of Iran. Our selection showcases both vein-cut (VC) and cross-cut (CC) patterns, providing architects and designers with flexible options for bookmatching and continuous vein runs. The stone's dramatic color profile makes it a favorite for feature elements, contrasting beautifully with lighter stones, brass fixtures, and polished metals.
The geological formation of Golden Black Marble involves recrystallization over millions of years. As carbon-heavy limestone is subjected to high temperatures, its structure becomes highly compact. Trace mineral deposits of iron oxide and silica run through the stone during recrystallization, leaving the signature golden and white veins that define its aesthetic character.
Golden Black Marble is highly valued for interior design due to its low water absorption, high compressive strength, and excellent capability to hold a mirror-like polish. Key B2B project applications include:
Architects frequently pair Golden Black Marble with brushed brass, warm walnuts, and soft velvet textures to create a classic, luxurious ambiance. In minimalist designs, it serves as a bold statement piece, grounding large, open-concept spaces with its rich, dark tones.
B2B buyers frequently face critical challenges when importing natural marble, such as micro-fissures, color variation between blocks, and poor polishing quality. SherkatStone acts as a dedicated export aggregator and quality coordinator, supervising production directly at processing yards in Isfahan to eliminate these quality issues.
Our inspectors examine raw blocks at the quarry for structural soundness. During cutting and polishing, we enforce strict tolerances (+/-1mm thickness) and verify that all tiles are perfectly squared. We supervise the sorting process to ensure color and veining consistency across the entire shipment, guaranteeing that large-volume orders meet project specifications.
We use advanced resin filling techniques under vacuum conditions to seal all natural micro-veins, reinforcing the mechanical strength of the slabs while maintaining their pristine look. This attention to detail results in tiles that are ready for immediate, problem-free installation.
Our Golden Black Marble is tested against international ASTM and EN standards, demonstrating high suitability for premium B2B installations:
| Physical Property | Typical Value | Test Method |
|---|---|---|
| Bulk Specific Gravity (Density) | 2.72 g/cm³ | ASTM C97 |
| Water Absorption (by weight) | 0.18% | ASTM C97 |
| Compressive Strength (Dry/Wet) | 110 MPa / 95 MPa | ASTM C170 |
| Modulus of Rupture (Flexural Strength) | 11.5 MPa | ASTM C99 |
| Abrasion Resistance (Wear Index) | 22.0 Ha | ASTM C241 |
We provide a variety of formats to meet diverse project requirements:
Our partner facilities feature advanced multi-axis bridge cutters and CNC machinery, allowing us to fabricate custom pieces according to architectural shop drawings.
Depending on design needs, we offer multiple surface finishes:
Polishing enhances the rich black color and makes the gold and white veins stand out, creating a highly reflective, luxurious mirror finish.
Honed finish offers a smooth, satin-like surface with a matte appearance, while brushed (leathered) finish adds a tactile, organic texture.
As a premium calcitic marble, Golden Black has specific durability characteristics. It is highly resistant to indoor wear and tear, but exhibits sensitivity when exposed to harsh exterior weather elements. For this reason, we recommend its application primarily for indoor features, lobbies, and covered spaces.
When used indoors, it maintains its deep carbon black color indefinitely. Exposure to direct sunlight in outdoor settings may cause UV-induced fading of the black background over several years. Proper protective sealing helps slow this process, but enforcing its use inside remains the best practice.
To prevent damage during transit, we construct sturdy, fumigated wooden crates conforming to ISPM 15 standards. Slabs are secured on wooden A-frames lined with high-density foam buffers, and secured with heavy steel straps. Tiles are packed with foam cushioning on all sides to prevent movement during transport.
We include silica desiccant bags inside moisture-resistant plastic wrappings to prevent condensation and staining during long ocean voyages.
We manage the export workflow, coordinating truck transport from Isfahan to Bandar Abbas Port and booking container shipping to global ports. We offer flexible trade terms (FOB, CFR, CIF) and provide packing lists, commercial invoices, certificates of origin, and phytosanitary certificates for smooth customs clearance.
Successful installation of Golden Black Marble requires proper substrate preparation and adhesive selection. We recommend using high-performance, white latex-modified thinset mortars or epoxy adhesives to prevent staining and ensure maximum mechanical bond.
For wall cladding, mechanical anchor systems or high-tack construction epoxies must be utilized depending on tile size and weight. Back-sealing the tiles before installation prevents moisture migration from the substrate, reducing the risk of efflorescence.
The stone should be sealed with a penetrating, solvent-based sealer after installation to protect it against oil and water-based stains. Daily cleaning should be done with neutral pH stone cleaners, avoiding acidic or abrasive detergents that can dull the polished surface.
We source sequential blocks from the same quarry layer and sort tiles manually prior to packing to ensure veining and background color harmony.
Standard tile orders (2-3 containers) are typically processed and packed within 15 to 25 business days from order confirmation.
No, we do not recommend this marble for exterior flooring in cold regions due to freeze-thaw cycles. It is best suited for interior floors, walls, and covered areas.
Yes, we provide representative sample sets of various finishes shipped via international courier for designer approval.
Our standard terms are a 30% advance deposit via exchange networks, and the 70% balance settled upon presenting the draft shipping documents.
The Kashan quarry has an annual yield of over 50,000 tons, ensuring stable block supply for projects of any magnitude.
Yes, while 2cm and 3cm are our standard thicknesses, we can saw custom thicknesses like 4cm or 5cm for bespoke details.
We welcome inspection from firms like SGS, Bureau Veritas, or client-nominated representatives prior to shipping.
Slabs are numbered sequentially from 1 to N as they are sawn, enabling perfect alignment and match during installation.
Yes, our design department can generate custom dry-lay photos and maps to show how slabs will align on the wall.
Get in touch with SherkatStone's B2B export desk today to request catalog sheets, prices, or sample shipments for your upcoming projects.
| Dimensions | Slabs / Custom Tiles |
| Density / Weight | 2.7 g/cm³ |
| Stone Type | Marble |
| Color & Pattern | Black / Dark Grey |
| Finish Type | polished_honed |
| Compressive Strength | Extremely High |
| Water Absorption | vein_cut_cross_cut |
| Custom cutting | Yes |
