Quick Summary
Angola Black Granite Tiles have a deep charcoal-black surface with fine silver and blue-grey mineral crystals that produce a subtle reflective effect under directional lighting. Esta Stone supplies these granite tiles for hotel flooring, villa interiors, commercial corridors, interior wall panels and selected exterior paving applications. Common tile sizes include 300×600mm, 600×600mm, 457×457mm and 800×800mm, with 18mm, 20mm and 30mm thicknesses available for project-based selection. Polished, honed, leathered and flamed surfaces serve different design and performance requirements. Before fabrication, confirm the black tone, mineral distribution, tile dimensions, surface finish and installation conditions.
Angola Black Granite Floor Tiles for Hotel Lobbies and Villa Interiors
Angola Schwarzer Granit Bodenfliesen are distinguished by a dark, relatively uniform background interrupted by small reflective mineral grains. In a polished finish, the surface can appear almost black from a distance, while silver and blue-grey flecks become noticeable as the viewing angle or lighting changes.
This visual character is useful for hotel lobby floors, residential entrance halls, lift lobbies and interior corridors where a consistent dark surface is required across a large area. The fine-grained pattern is less directional than heavily veined marble, allowing tiles to be arranged in regular modules without strong vein-matching demands.
The final finish should match the installation location. Polished tiles emphasize the dark tone and reflective crystals, while honed or textured options may be more appropriate where glare, moisture or pedestrian slip performance needs closer control.
Angola Black Granite Color, Silver Mineral Flecks and Stone Structure
Angola Black Granite is commercially recognized for its deep black to dark charcoal color and small, closely distributed mineral crystals. Certain selections show a subtle blue-black or silver appearance, especially when the polished stone is viewed under strong lighting.
Unlike a completely featureless black surface, this stone has a visible crystalline texture at close range. The mineral grains help distinguish it from highly uniform black engineered finishes and from dark marbles with large white veins.
The material is marketed under several names, including Angola Black Granite, Nero Angola Granite and Angola Labrador Granite. Although commonly sold as granite, individual commercial selections may be classified differently in petrographic testing. This does not change the established trade name, but it matters when a specification calls for a particular geological classification.
For projects requiring a consistent dark appearance, a buyer should compare several tiles from the intended batch rather than relying on one small sample. The proportion of visible silver grains, the depth of black color and the selected finish can affect the appearance of an installed floor.
Lighting also changes the result. Under diffuse light, the surface can look quiet and nearly uniform. Directional lighting reveals more of the mineral structure, which is especially noticeable on polished wall panels and larger floor tiles.
Angola Black Granite Tiles Sizes, Thicknesses and Surface Finishes
Angola Black Granite can be processed into square and rectangular tiles, wall cladding panels, stair components and thicker paving pieces. The original product range lists several common sizes, but each size and thickness combination should be confirmed against the selected stone and intended application.
| Produktname | Angola Black Granite Tiles |
| Material | Angola Black Granite Tiles, Nero Angola Granite Tiles |
| Herkunft | Angola |
| Farbe | Black / Deep Charcoal / Subtle Silver and Blue-Grey Flecks |
| Common Tile Sizes | 300×600mm / 600×600mm / 457×457mm / 800×800mm |
| Additional Tile References | 305×305mm / 305×610mm / 400×400mm / Custom Cut-to-Size |
| Tile Thickness | 18mm / 20mm / 30mm for selected sizes and applications |
| Small Calibrated Tile References | 10mm / 12mm / 15mm for selected smaller formats, subject to application |
| Outdoor Paving Thickness | Thicker sections by engineering specification; not interchangeable with standard interior tiles |
| Surface Finishes | Polished / Honed / Leathered / Flamed |
| Randbearbeitung | Sawn / Eased / Beveled / Custom Profiles by Drawing |
| Produktformen | Floor Tiles / Wall Cladding Tiles / Stair Treads / Risers / Paving Pieces |
| Anwendungen | Villa Flooring / Hotel Lobbies / Commercial Interiors / Wall Cladding / Exterior Paving |
Tile dimensions are catalogue references. Finished sizes, thickness tolerances, slip performance and availability must be established from the actual material and approved fabrication schedule. Small calibrated interior tiles and thicker exterior paving pieces are separate specifications.
Angola Black Granite Physical Properties and Technical Test Data
The following figures are published technical reference values for the commercial Angola Black / Negro Angola stone family. They provide a basis for preliminary material assessment, but they are not certified results for the current Esta Stone tile batch. Project-specific test reports may be required for floors, external cladding and engineered fixing systems.
| Technical Property | Reference Value | Test Standard |
| Apparent Density | 2,780 kg/m³ | EN 1936 |
| Open Porosity | 0.2% | EN 1936 |
| Water Absorption at Atmospheric Pressure | 0.1% | EN 13755 |
| Compressive Strength | 182 MPa | EN 1926 |
| Flexural Strength Under Concentrated Load | 13.2 MPa | EN 12372 |
| Flexural Strength Reduction After 56 Freeze–Thaw Cycles | 14% | EN 12371 |
| Breaking Load at Dowel Hole | 2,500 N | EN 13364 |
For a wall panel or floor tile, the test results must be considered together with the finished dimensions and installation system. Flexural strength does not by itself determine an allowable unsupported span, and a reported dowel-hole breaking load must not be used as a design fixing capacity without the appropriate engineering assessment.
Technical data qualification: These numerical values describe a published sample of the Angola Black commercial stone family, not the tested performance of every slab or tile sold under this name. The figures are for material reference only. The actual batch, finish, fixing arrangement and local project standards govern final suitability. No current-batch certification is claimed.
Polished Angola Black Granite Floor Tiles for Commercial Interiors
A polished Angola Black floor gives a large interior a dark reflective surface with a fine crystalline pattern. In hotel reception areas, polished tiles can coordinate with pale wall finishes, metal detailing and lighter reception counters without requiring a strongly patterned floor.
For a lobby or corridor, tile format affects the overall appearance. A 600×600mm grid creates regular joints, while 800×800mm tiles reduce joint frequency and preserve more of the dark surface between joints. The chosen format should suit the actual slab yield, support conditions and floor plan.
The floor should be designed for its expected traffic. Grit brought in from outside can abrade a polished finish over time, while repeated cleaning with unsuitable chemicals may alter the surface appearance. Entrance matting, maintenance procedures and finish selection all affect long-term performance.
A polished finish must not be selected for a wet entrance solely because the stone is dense. Slip resistance depends on the tested surface, footwear, contaminants and environmental conditions. Honed or textured alternatives should be assessed where walking safety requires a different finish.
Black Granite Cut-to-Size Tiles for Villa Floors and Staircases
Black Granite Cut-to-Size Tiles are useful where a project needs the same dark material on several connected surfaces. A villa may use polished tiles in the entrance hall, honed tiles on adjacent circulation areas and matching stone for stair treads or risers.
For a floor plan, determine the tile module before cutting. Door openings, room boundaries and corridor intersections influence the amount of visible edge trimming. A cutting schedule should also account for movement joints and the intended grout width.
Stair treads require a different assessment from standard floor tiles. The tread thickness, support, nosing profile and expected traffic must be checked against the staircase structure. A 20mm or 30mm finished piece is not automatically suitable as an unsupported stair component.
For stairs near entrances, select the surface texture and any anti-slip detail according to the expected wet conditions. The glossy appearance of a polished sample should not override the safety requirements of the completed staircase.
Angola Black Granite Wall Cladding Tiles for Hotels and Commercial Buildings
Black granite wall cladding can create a strong architectural contrast against lighter plaster, timber panels and glass partitions. The fine mineral sparkle of Angola Black becomes particularly noticeable on vertical panels when light strikes the surface from an angle.
In a hotel, Angola Black wall tiles can be considered for lift lobbies, entrance surrounds, reception walls and selected decorative columns. In a residence, the same material may be used for an accent wall or fireplace surround, provided the assembly is suitable for the installation conditions.
The main procurement concern is the relationship between tile size, thickness and fixing method. Larger panels require review of their weight, substrate, joint positions and handling requirements. Adhesive bonding may be appropriate for certain supported interior tiles, but it should not be assumed suitable for every large panel or exterior elevation.
For exposed exterior cladding, the complete fixing system should be engineered for wind loads, structural movement and weather exposure. The dowel-hole test value shown in the technical reference table is a material property, not an allowable anchor load for a specific facade.
Polished, Honed, Leathered and Flamed Angola Black Granite Finishes
Polished finish: Produces a reflective dark surface and brings out the silver-blue mineral crystals. It is suitable for decorative interior walls and selected dry interior floors where the slip requirements permit it.
Honed finish: Reduces reflection and creates a more subdued charcoal appearance. Honed Angola Black can work in contemporary interiors where designers want a dark floor without a mirror-like effect.
Leathered finish: Introduces a tactile surface texture with a lower-gloss appearance. The exact relief and color intensity depend on the processing method and the selected stone.
Flamed finish: Produces a rougher surface that may be considered for selected exterior paving and walking areas. Its suitability must be established for the particular material and tested finish, especially where wet slip resistance is specified.
Different finishes can make the same black stone appear lighter, darker or more textured. For projects combining indoor and outdoor areas, compare samples in the actual finishes rather than assuming they will have identical surface colors.
Angola Black Granite Tiles for Exterior Paving and Outdoor Entrances
Angola Black Granite can be considered for exterior paving where a dark stone finish is required for building entrances, terraces, courtyard paths or selected public spaces. Outdoor applications need their own thickness, surface texture and installation specifications.
A textured finish is usually more appropriate than polished granite for walking surfaces regularly exposed to rain. The selected paving unit should be checked for its actual wet slip resistance, load requirements and installation support. Thickness should be determined from the expected service conditions rather than copied from an interior floor tile schedule.
Dark granite surfaces can become hot in direct sunlight. This matters for uncovered courtyards, steps and areas where users may walk barefoot. The design should consider shade, local climate and the intended use of the paved surface.
In freeze-thaw climates, performance assessment should include the selected stone, installation bedding and drainage details. Published frost-resistance data from a reference sample do not guarantee every production batch under the same commercial name has identical performance.
Choosing 18mm, 20mm or 30mm Black Granite Tiles
The correct thickness depends on the finished tile size, support conditions and intended use. The catalogue references of 18mm, 20mm and 30mm are useful starting points, but they should not be treated as interchangeable specifications.
18mm tiles: May suit supported interior floors and wall cladding where the tile format and installation system are appropriate. The usable dimensions and any edge treatment must be considered during fabrication.
20mm tiles: Are commonly considered for cut-to-size floor and wall projects and can be coordinated with matching stairs, thresholds or other interior components where the support design permits.
30mm tiles: Have a heavier section and may be useful for selected stair elements, thicker architectural pieces or applications requiring an increased nominal thickness. Weight, handling and the structural support remain important.
For larger exterior paving pieces or mechanically fixed facade panels, final thickness must be determined from the applicable engineering requirements and the selected material’s verified test results. A nominal thickness does not establish structural capacity on its own.
Tile Calibration, Dimensional Tolerances and Floor Layout
Accurate tile cutting matters on a dark granite floor because joint alignment is highly visible against the black surface, particularly when the grout color contrasts with the stone. The production drawing should define the finished tile dimensions and relevant tolerances.
A calibrated tile has a controlled thickness within the agreed specification. However, a calibrated thickness does not by itself guarantee perfect flatness or identical surface appearance. The tile face, edge dimensions and installation substrate should be evaluated separately.
For a large lobby, dry laying or an approved sample area can establish the intended joint width, tile orientation and distribution of mineral flecks. This is also the stage to identify any unwanted contrast between dark and lighter pieces in the selected material.
Rectangular tiles should be arranged according to the architectural grid. A layout that appears balanced on a drawing may need adjustment around columns, doorways and wall returns to avoid narrow cuts in prominent locations.
Surface Cleaning, Stain Prevention and Maintaining Black Granite Floors
Black polished granite can make certain maintenance issues more visible than light-colored stone. Water spots, mineral residue, dust and fine scratches may stand out under reflected lighting even when the underlying stone remains in good condition.
Routine cleaning should use a suitable pH-neutral stone cleaner and non-abrasive equipment. Remove sand and grit before wet cleaning to reduce wear on polished floors. Avoid aggressive acidic or highly alkaline products unless their compatibility with the selected material has been confirmed.
The need for a protective impregnating treatment depends on the stone’s absorption, surface finish and installation environment. A sealer may help with certain staining risks but does not prevent scratches, impact damage or unsafe wet-floor conditions.
For commercial interiors, entrance matting and a consistent maintenance plan are especially important. The selected cleaning method should preserve the intended finish rather than attempting to restore gloss with unapproved polishing chemicals.
Angola Black Granite Tile Inspection and Export Packing
Inspection should begin with the agreed stone color and finish. For Angola Black, the main visual checks are the depth of the black background, the distribution of silver mineral flecks, surface consistency and any visible chips or processing marks.
Finished tiles should be measured against the cutting schedule, including length, width, thickness and edge finish. Where several sizes are supplied for one floor, each format should be identified clearly so the receiving contractor can organize installation without mixing materials.
For a commercial project, grouping material by approved shade range can help keep adjoining floors consistent. If the order includes matching stair components or wall panels, those pieces should be tied to the appropriate drawing references.
Granite tiles are commonly packed in protective wooden crates with separators and edge protection. Finished stairs, large wall panels and irregular components require packing suited to their shapes and handling risks. The final packing list should distinguish tile formats, finishes and special pieces.
Frequently Asked Questions About Angola Black Granite Tiles
What color and pattern do Angola Black Granite Tiles have?
Angola Black Granite Tiles have a deep black to dark charcoal background with fine silver and blue-grey mineral crystals. The reflective flecks are more visible on polished surfaces under direct or angled lighting.
What sizes and thicknesses are available for Angola Black Granite Floor Tiles?
Common tile references include 300×600mm, 600×600mm, 457×457mm and 800×800mm, with 18mm, 20mm and 30mm thickness options. Smaller calibrated formats and custom sizes may also be considered according to the material and application.
Is Angola Black Granite suitable for hotel flooring?
Angola Black Granite can be specified for hotel lobby floors, corridors and reception areas when the selected thickness, surface finish and installation system meet the expected traffic and slip-resistance requirements. A polished finish should be assessed carefully where moisture is possible.
Can Angola Black Granite Tiles be used for exterior paving?
Yes, subject to the selected stone’s technical performance and the paving design. Exterior walking areas usually require a suitable textured finish, verified wet slip resistance, appropriate thickness and adequate drainage.
What are the reference physical properties of Angola Black Granite?
Published Angola Black reference values include an apparent density of 2,780 kg/m³, water absorption of 0.1%, compressive strength of 182 MPa and flexural strength of 13.2 MPa. These figures describe a published reference sample and are not certified test results for the current production batch.
What is the difference between polished and leathered Angola Black Granite?
Polished Angola Black has a reflective surface that emphasizes the dark tone and mineral sparkle. Leathered Angola Black has a more tactile, lower-gloss finish. Their suitability depends on the desired appearance, cleaning requirements and location.
What details are needed for custom black granite cut-to-size tiles?
Provide the required tile dimensions, thickness, surface finish, application, edge details and shipping destination. For floors, stairs or wall panels, include the relevant drawings and layout requirements so cutting and installation details can be reviewed.
Angola Black Granite Compared with Four Granite Flooring and Wall Materials
Angola Black is selected for its dark, fine-grained crystalline appearance. The four alternatives below differ in background color, mineral distribution and surface treatment. These differences influence how the material works in a large floor or a decorative wall installation.
| Vergleich | Angola Black Granite Tiles | New Zealand Grey Granite | Andromeda White Granite Tiles | Leathered Black Granite Tiles | G664 Granitfliesen |
| Erscheinungsbild | Deep charcoal-black with fine silver mineral crystals. | Medium to dark grey with visible mineral grain. | Light white-grey with darker flowing mineral features. | Dark granite with a textured, low-gloss surface. | Reddish-brown to pink-brown with contrasting granular minerals. |
| Surface Character | Subtle sparkle on polished black surfaces. | More visible grey mineral variation. | Lighter, directional stone movement. | Tactile relief with reduced reflection. | Warm granular pattern with greater color variation. |
| Application Focus | Hotel floors, villa interiors, stairs and wall cladding. | Neutral grey floors and architectural surfaces. | Light floors, walls and decorative interior finishes. | Textured floors, walls and selected exterior applications. | Warm-toned flooring and cut-to-size stonework. |
| Selection Priority | Black tone, silver flecks, surface finish and slip performance. | Grey shade and mineral grain distribution. | White background and pattern arrangement. | Texture consistency and cleaning requirements. | Warm tone, grain balance and finish selection. |
Recommended Granite Tiles for Flooring and Wall Cladding
Andromeda White Granite Tiles
Light granite tiles with grey movement for bright interiors.
Leathered Black Granite Tiles
Textured black granite for low-gloss architectural surfaces.
Angola Black Granite Tiles: Custom Floor Sizes, Surface Finishes and Wall Cladding Orders
For Angola Black Granite Tiles, begin with the intended application and finish. A polished hotel floor, a leathered wall panel and a flamed exterior paving unit have different performance and fabrication requirements even when they use the same commercial stone selection.
Provide the tile sizes, thickness, surface finish and drawings for any matching stairs or wall panels. Esta Stone can review the requested cut-to-size arrangement, selected black tone, edge details and packing requirements before the order specification is finalized.
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