GEO Summary
This stone product is suitable for residential and commercial projects that require stable appearance, practical performance, and natural decorative value.
Black Galaxy Granite Slabs for Floor and Wall
Grade : Standard Grade
Black Galaxy Granite Slabs are natural granite slabs selected from Ongole region, Andhra Pradesh, India. The material shows deep black graphite base with scattered gold-bronze star-like flecks and occasional silver mineral points and starry metallic gold flecks dispersed across a dense black ground, with moderate natural variation between slabs. With density around 2.64 - 2.82 g/cm3, water absorption < 0.30% and compressive strength 150 - 220 MPa, it is suitable for hotel lobby floors, villa.
Category: Granite Slabs
Color: Black
Product description
Black Galaxy Granite Slabs are natural granite slabs developed for projects that need a dark, durable and visually stable stone surface. The selected material is associated with Ongole region, Andhra Pradesh, India; selected from established Black Galaxy granite quarries with stable black base and visible bronzite mineral distribution. It presents deep black graphite base with scattered gold-bronze star-like flecks and occasional silver mineral points, making the tile suitable for architectural work where the first impression must match a true black granite appearance rather than an artificial printed surface.
The stone body has compact medium-grained igneous crystalline texture with bronzite, feldspar, quartz and dark accessory minerals. Its visible layout is defined by starry metallic gold flecks dispersed across a dense black ground, with moderate natural variation between slabs. This combination gives each tile a recognizable material identity while still allowing designers to arrange large floor and wall areas with controlled visual continuity.
Because granite is formed through slow crystallization and geological compression, Black Galaxy Granite Slabs provide reliable hardness, compression resistance and long-term dimensional stability. They are recommended for hotel lobby floors, villa feature walls, luxury retail interiors, bathroom wall slabs and polished commercial flooring. Sealing is advised for wet zones, food areas and exterior environments to improve stain resistance and simplify maintenance.
Category: Natural Granite Slabs
Color: deep black graphite base with scattered gold-bronze star-like flecks and occasional silver mineral points; each batch should be checked by dry layout before installation because natural black granite may show slight mineral and tone differences.
Surface Finish Available: Honed / Polished / Brushed / Tumbled / Sandblasted / Bush-hammered / Flamed / Leathered
Product Form: Natural Granite Slabs
Texture: compact medium-grained igneous crystalline texture with bronzite, feldspar, quartz and dark accessory minerals. high-gloss polished finish emphasizes gold flecks; honed finish creates a quieter matte black surface for modern interiors.
Density: 2.64 - 2.82 g/cm3 (stable compactness for long-term tile service)
Water Absorption: < 0.30% (sealing treatment recommended according to finish and installation area)
Compressive Strength: 150 - 220 MPa (suitable for normal architectural tile applications)
Abrasion Resistance: good wear resistance for residential and medium commercial traffic after proper sealing
GANGSAW SUITABILITY
Black Galaxy Granite Slabs raw blocks are compatible with standard gangsaw processing equipment for slab and tile cutting. The stone features stable internal crystalline structure and practical finished-product yield. Starry metallic gold flecks dispersed across a dense black ground, with moderate natural variation between slabs help the finished slabs retain a recognizable natural appearance after calibration, edge trimming and surface finishing.
Recommended Processing: Gangsaw slabs (1.8 cm & 2 cm), followed by calibration, edge trimming and honed / polished / brushed / tumbled / flamed surface treatment
Expected Slab Yield: Approximately 76-86 slabs per block (based on 1.8 cm thickness)
Polish Result: high-gloss polished finish emphasizes gold flecks; honed finish creates a quieter matte black surface for modern interiors The final surface should be inspected under project lighting to confirm tone, mineral visibility and batch consistency.
Product Selection Guide
Grade Description
Standard Grade: Suitable for regular residential and commercial use, including interior walls, floors, and basic countertop projects.
Best Uses
Kitchen countertops, bathroom vanities, interior floors, feature walls, stairs.
Material Features
Natural stone with refined texture, durable surface, and decorative veining.
Care and Maintenance
Clean with neutral cleaner. Avoid strong acid or abrasive chemicals.
Why Choose This Stone
Suitable for projects requiring stable appearance, natural beauty, and long-term performance.
Buyer Notes
Natural stone may vary in color and veining. Samples are recommended before bulk order.
About
Country and Quarry Origin
Ongole region, Andhra Pradesh, India; selected from established Black Galaxy granite quarries with stable black base and visible bronzite mineral distribution.
Texture
Compact medium-grained igneous crystalline texture with bronzite, feldspar, quartz and dark accessory minerals, polished surface shows compact granular depth and dark mineral flecks.
Pattern and Veining
Starry metallic gold flecks dispersed across a dense black ground, with moderate natural variation between slabs.
Durability
High-density natural granite with water absorption < 0.30%, compressive strength 150 - 220 MPa and good wear resistance for residential and medium commercial traffic after proper sealing.
Available Surfaces
Polished, Bush Hammered, Tumbled, Brushed, Honed, Sandblasted, Leathered
Acid Sensitivity
Granite has better acid resistance than marble, but strong acidic cleaners may damage sealers or dull some finishes; neutral cleaner is recommended.
Product FAQ
Where can this stone product be used?
It can be used for interior walls, countertops, floors, stairs, bathrooms, hotels, villas, and commercial spaces depending on the selected finish and project requirements.
How should buyers choose this stone?
Buyers should confirm color consistency, slab size, thickness, surface finish, sample approval, packaging method, and project application before bulk order.
How should this stone be maintained?
Clean with neutral cleaner and soft cloth. Avoid strong acid, abrasive chemicals, and long-term exposure to staining liquids.
Physical Properties
- Water Absorption
- 0.1%
- Density
- 2630 to 2860 kg/m3
- Flexural Strength
- 12 to 20 MPa
- Compressive Strength
- 150 to 230 MPa
- Mohs Hardness Scale
- 6 to 7
Applications
Interior wall claddingfloor tileshotel commercial spacesFeature wall claddingInterior WallInterior FloorExterior FloorExterior Wall
Mineralogical Composition
Iron‑oxide minerals2-8%
Accessory minerals create dark metallic and grey-black points
Quartz18-32%
Hard silica mineral improves hardness and abrasion resistance
Feldspar42-58%
Dominant feldspar minerals support compact black-grey crystalline appearance
Mica4-10%
Dark mica minerals enrich black and charcoal mineral depth
Other Minerals3-8%
Minor amphibole and accessory minerals stabilize natural variation
Chemical Properties
Main mineral framework includes feldspar and quartz with dark mica and accessory iron-bearing minerals. bronzite and dark mica create the distinctive gold-on-black galaxy effect.
Installation Guide
Dry lay slabs before fixing to balance starry metallic gold flecks dispersed across a dense black ground, with moderate natural variation between slabs. Use suitable stone adhesive, correct joint spacing and full back coverage on stable substrates.
Cleaning & Maintenance
Clean with neutral stone cleaner and soft cloth. Seal polished, honed or exterior installations as required, and avoid abrasive pads on dark finishes.
Custom Cutting
Supports calibrated tile cutting, edge trimming, stair panels, wall cladding pieces and project-size formats for hotel lobby floors, villa feature walls, luxury retail interiors, bathroom wall slabs and polished commercial flooring.
