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Golden Black Marble gives strong visual order through contrast. The ground is deep black, crossed by clean gold and white veins that read clearly even under low light. As a calcitic stone, it takes a high polish for crisp reflections, while honed or leathered finishes reduce glare for busy rooms. Low open porosity and careful detailing support long use indoors. It suits lobby floors, wall panels, stair parts, reception desks, vanities, and furniture faces. The sections below explain its structure, performance, sizes, suitable uses, pricing factors, processing path, care steps, and supply notes for accurate specification.
When schedules are tight, the right partner helps projects land on time with fewer site issues. JAM Stone Co. manages block selection, cutting, calibration, and finishing with checks at each stage. Thickness is held within tight tolerances, shade groups are organized for consistent rooms, and edges are inspected before packing. Crates use moisture barriers and protection at corners and faces. As a seasoned supplier of Golden Black Marble, the company’s process reduces breakage, limits on-site surprises, and supports clear documentation from purchase to handover across different job sizes.
Golden Black Marble is a compact Iranian marble with a black base and gold-white veins. Patterns range from calm, straight lines to broken, net-like forms where calcite healed earlier seams. It is fully opaque and reads as a clear graphic field. Slabs often receive vacuum resin and, at times, mesh backing to support transport and handling in vein-dense areas. Designers use it for interior floors, cladding, vanities, fireplace surrounds, stair parts, and feature walls. Finishes include polished, honed, leathered, and bush-hammered, chosen to balance light, texture, and slip needs in each space.
Golden Black Marble is a fine- to medium-grained calcitic rock with low open porosity and low water uptake. Typical bulk density falls near other compact marbles. Indicative mechanical values for compact marbles are: compressive strength ~80–130 MPa and flexural strength ~8–18 MPa; actual performance varies with vein density and orientation. Intact zones carry high compressive loads, while bend strength is lower along busy vein paths, which is normal for this group. Resin and mesh support help slabs during lifting and cutting. Consistent calibration reduces lippage and edge chips. For exterior work, limit use to non-freeze climates with good drainage and avoid de-icing salts. In wet areas, planned sealing and careful grout design improve long-term results.
The stone is mainly calcite with minor dolomite and dark accessory minerals. Gold veins form where iron oxides colored calcite that sealed small fractures. White stringers are usually pure calcite; thin quartz lines may appear in some blocks. The compact matrix supports a clean polish, while factory resin handles micro-pits near vein paths and improves service life.
The base reads black to near-black charcoal. Veins run from hairline to a few millimeters and can be sparse or busy, depending on the block. Straight cuts can show tidy, directional flow; cross-cuts increase movement. Shade variation is moderate, so project lots should be grouped before cutting to achieve steady tone and a coherent visual field.
Typical bulk density is around 2.65–2.72 g/cm³, with open porosity often below 1 percent. Water absorption is low, generally ~0.10–0.30 percent by weight. These traits help the stone accept a strong polish and resist rapid staining. Any micro-pits at veins are normally filled in the factory, leaving a smooth, closed, easy-to-clean face.
As a calcitic marble, surface hardness is ~Mohs 3 (occasionally 3–3.5), so silica grit can scratch it. Compressive strength lies in the normal compact-marble band (~80–130 MPa), and flexural strength commonly ~8–18 MPa, both influenced by vein orientation. Mesh backing and resin increase handling safety. Accurate calibration and steady polishing steps reduce edge spalls, control lippage, and support neat, narrow joints.
Natural features may include tight healed seams, stylolites, and thin clay or oxide lines within veins. Accept only blocks and slabs where open cracks are absent and fills are color-matched. Use UV-stable resins for repairs and factory fills. Selection rules: deep, even black ground; steady vein rhythm; limited cloudy patches; and a gloss that holds under raking light after finishing.
Polished Golden Black Marble gives high reflectance and clear contrast, which helps spaces read organized and clean. Honed or leathered finishes lower glare and show subtle texture. Indoors, the black base holds tone well. Outdoors, textured finishes weather more evenly but may lose gloss faster. As a calcitic material, it will etch on contact with acids, so pH-neutral cleaners and planned sealing are required. For sun-exposed interiors, normal thermal change is fine. Exterior work should prioritize shade, drainage, and non-acidic environments to keep the surface stable over time.
Polished faces show mirror-like depth with clear pattern edges. Honed lowers shine for calm floors yet keeps vein legibility, while leathered adds micro-relief that softens reflections. Under directional light, the gold-white lines read sharply. Book-matching from sequential slabs can create continuous movement across feature walls without busy grout lines or visual breaks.
Polished feels glass-smooth; honed reads as satin with light drag; leathered adds gentle topography without harsh peaks. Bush-hammered is coarse and used for steps, ramps, or thresholds where extra grip is needed. Factory fills leave a level touch across field and veins. This helps cleaning tools move freely and reduces dirt traps at micro-pits.
Indoors, color stays stable, and wear is mainly micro-scratch from grit. Outdoors, pollution and acid rain can mute gloss; textured finishes mask this better than polished. Freeze–thaw exposure is risky; avoid de-icing salts and standing water. Good drainage, movement joints, and regular neutral cleaning will slow patina change and keep surfaces serviceable.
The calcite matrix reacts with acids like citrus or vinegar and may show dull spots called etch marks. Use only pH-neutral cleaners and avoid harsh alkalis and bleach. Sealers reduce water and oil uptake but do not stop etching, so coasters and trays are still wise. Test any new care product on spare pieces before wide use.
Standard slabs come in 2 cm and 3 cm thickness, usually 260–320 by 160–200 cm, with select blocks yielding larger pieces. Tiles often include 30×60, 60×60, and 60×120 cm, cut to 10–20 mm. Cut-to-size stair parts, skirting, and countertops are routine. Book-match panels are popular for walls. Mosaics and waterjet work are possible. Pavers are feasible only in mild, non-freeze climates and light-duty foot-traffic areas with textured finishes and excellent drainage. For all formats, flat substrates, correct adhesives, and movement joints protect edges and reduce service issues during the stone’s service life.
Common thicknesses are 2 cm and 3 cm. Typical lengths run 260–320 cm and widths 160–200 cm. Vein-rich areas often receive resin and sometimes mesh support. Polished is standard; honed is common for low-glare interiors. Sequential slabs allow book-matching for mirrored patterns on walls, desk fronts, and elevator surrounds with clear alignment.
Standard modules are 300×600, 600×600, and 600×1200 mm, mostly at 10–20 mm thick. Rectified edges enable narrow joints when substrates are flat. Honed or leathered finishes suit floors where glare control and quiet texture are helpful. Box-level shade grouping keeps large spaces consistent. Slip targets can be supported with brushed or light-textured surfaces.
Custom treads, risers, skirting, thresholds, vanity tops, and large wall panels are routine. Specify vein direction for narrow parts to avoid weak orientations. Factory dry-lay with photos supports approval before crating. CNC and waterjet allow accurate sink cut-outs, miters, and inlays. Edge protection during handling avoids chips at exposed corners.
Mesh-mounted sheets in hexagon, herringbone, chevron, and basket-weave scale are available. Small formats follow curves on showers and niches and show the black-gold contrast at a fine grain. Honed or tumbled textures help foot grip in wet zones. Seal both stone and grout to reduce staining and to keep the color split clean over time.
Use only in mild, non-freeze climates and away from de-icing salts or acids. Choose bush-hammered or sandblasted textures for traction and target thickness ≥ 30–40 mm depending on base stiffness and loading. Install over drained beds with movement gaps and edge restraint. Chamfer edges where heavy traffic or carts are expected to limit spalls and to keep lines neat.
Typical sizes are 80–120 mm tall and 15–20 mm thick with eased or micro-beveled edges to resist cleaning impacts. Match finish to the floor for a consistent look. Pre-miter inside and outside corners and reinforce critical joints. Long continuous lengths reduce visible breaks and shadows where walls are not perfectly straight.
Choose blocks for deep black ground, stable gold-white vein rhythm, and minimal open flaws. Larger sound blocks raise slab yield and enable long, book-matched runs. Trial polishing and careful sawing plans improve output from vein-dense areas. Clear grading helps align budget and look, from first-choice to commercial grades with more repair.
Golden Black Marble suits interior floors in lobbies, galleries, and homes where lighting can be managed. Wall cladding, reception desks, conference tables, stair parts, bathroom walls, and fireplace surrounds are common. In kitchens, choose honed or leathered surfaces and plan for careful care to limit visible etching. Exterior paving is not recommended in freeze–thaw or chemically aggressive settings; limit exterior use to sheltered cladding or lightly trafficked, non-freeze zones with textured finishes and robust drainage. For safety, match finish to slip needs on ramps and stairs. Book-matched feature walls provide a strong focal point while keeping grout lines to a minimum.
Prices depend on grade, block size, slab yield, finish, thickness, sizes, and freight. First-choice material shows a deep, even black ground and balanced gold-white lines with little repair. Big, sound blocks lift yield and cut waste. Finishes with multiple resin cycles or high-gloss targets add time and cost. Oversize panels require careful selection and custom crates. Shipping distance, crate design, and schedule windows also affect landed costs. Formal quotes need confirmed quantities, sizes, finish schedules, packing method, and delivery terms so both risk and value can be measured and managed.
First-choice lots show uniform dark ground, steady vein rhythm, and tight, color-matched fills. Commercial grades allow more patching, mixed densities, or cloudy parts. Grade drives look and time on the line, which directly changes cost. Higher grade also holds gloss better under raking light, reducing rework risk during installation and final checks.
Larger pieces of stone give longer and wider slabs suitable for book-matching and big panels. Cracked or vein-heavy blocks reduce first-quality yield and increase waste. Better yield spreads fixed costs over more usable area. Early focus on block dimensions helps projects that need continuous wall runs or long stair flights with few visible joints.
Vacuum resin, slow cure, and repeat passes improve surface strength and gloss life, adding cost but improving stability. Accurate calibration, tight tolerance control, and steady grit progress keep surfaces flat. Edge quality matters on miters, skirting, and stair nosings. These steps increase unit price but reduce site repair, which saves time overall.
Polishing requires higher grits and clean slurry control to achieve high reflectance. Honed or leathered finishes add steps to shape texture and lower glare. Bush-hammered or sandblasted surfaces improve traction for stairs and entries. Each finish level changes time, tool wear, and inspection load, which becomes visible in the final unit pricing.
Thicker pieces use more stone and need slower cutting and heavier handling. Oversize panels call for selected slabs, reinforced crates, and careful logistics. Tight size tolerances and rectification add passes and time. On the other hand, standard tiles benefit from line efficiency, which can keep unit costs lower for large, regular floor plans.
Lead time depends on quarry output, block inventory, and finishing capacity. Crate builds change with route risk; extra moisture barriers, corner guards, and strapping add safety and cost. Container consolidation can lower freight per unit but may shift schedules. Peak building seasons tighten supply, so early orders help secure consistent lots.
Producers select blocks for a dark, even base and stable vein rhythm. Each block is tested, trimmed, and planned to respect natural seams. Slabs are sawn, kiln-dried, and vacuum-resined as needed; some receive mesh support. Thickness is calibrated, then faces are polished or textured. Lots are shade-grouped, edges checked, and dry-laid for approval with photos. Packing includes foam sheets, corner guards, edge spacers, moisture barriers, and strong, heat-treated wooden crates. Labels record batch codes, thickness, finish, and orientation. Final checks confirm flatness, gloss, and fill quality before the goods are released for export.
Use suitable cement-based or epoxy adhesives on flat substrates; rectified tiles usually run 2–3 mm joints. Apply a penetrating sealer before and after grouting, then re-seal high-traffic floors on a set cycle. Clean with pH-neutral agents; avoid acids or harsh alkalis. Blot spills quickly to reduce etching. Use walk-off mats and soft furniture pads. In wet rooms, provide ventilation and slope to drains. For stains, test poultices on off-cuts. When wear appears, plan re-honing or re-polishing. Keep textured finishes clean from residue so their slip resistance remains stable through the service life.
Choose polymer-modified adhesives for stone and ensure substrates meet flatness rules to limit lippage. Keep joints consistent and include movement gaps per standards at perimeters and stress points. Proper bed contact reduces hollow sounds and future cracking. Follow manufacturer open times and curing steps to protect gloss and edge integrity during installation.
Use penetrating sealers suited to dark calcitic stone and test small areas for any unwanted darkening before full use. Apply one coat before grouting to reduce staining, then a second after final clean-down. In heavy traffic zones, plan re-sealing on a documented interval matched to use intensity (often 6–12 months for busy interiors). Keep a simple log so maintenance teams can track dates and products.
JAM Stone Co. runs an integrated line from block selection to finished parts. The team supports shop drawings, vein-match mapping, and mock-ups so the design intent is clear before cutting. Precision calibration and vacuum resin lines help hold thickness and gloss across lots. Dry-lay photos document order and shade for approval. As a trusted provider of Golden Black Marble, the company focuses on steady color, clean edges, and accurate packing. This approach suits boutique interiors and larger commercial packages where predictable outcomes and neat site handovers are required.
Quality checks cover visual grade, surface flatness, and edge integrity, with data available when tests are requested. The logistics group plans crate builds, moisture control, and clear labeling for smooth receipt on site. Past shipments include GCC, Europe, and East Asia with flexible minimums matched to project size. Custom cutting and special pieces are coordinated through shop drawings. As an experienced exporter of Golden Black Marble, JAM Stone Co. aligns production windows, packing choices, and documents so orders move through ports efficiently and arrive ready for fast installation.
The stone is sourced in Iran from marble benches that yield a dark base with stable gold and white veins. Close ties with mine owners provide priority access to premium benches and steady block sizes. Selective trimming at the face helps remove weak zones and improve slab yield. Regular review of benches tracks color and vein rhythm over time. This upstream focus, combined with careful planning at the saw, supports consistent appearance across large projects and reduces waste, handling risks, and delays that can occur with irregular block supply.
Faces are separated by foam sheets, and corners are guarded to prevent impact chips. Edge spacers keep panels from touching inside the crate. Bundles are shrink-wrapped with moisture barriers, and desiccants are added for long routes. Crates use heat-treated timber with screw fasteners and steel strapping. Containers are braced to stop movement. Labels show product code, finish, thickness, net area, lot number, and arrows for orientation. Photo logs travel with the shipment so site teams can check contents fast and move crates to the correct zones for installation.
is a marble with a black background and in some cases brownish with irregular white and gold lines. These stones are made in slab, tile and longitudinal dimensions.
The widespread popularity of Iran’s Golden Black marble extends globally, with export destinations spanning across continents. European countries such as Italy, Germany, England, France, Belgium, and Poland are prominent importers, appreciating the marble’s unique aesthetic and quality.
Address: No. 1014, JAM Center, Jamaran St., Niavaran, Tehran, Iran – 1977763988
Email: info@jamstoneco.com
