Galaxy Black Polished Granite
The Galaxy Black Granite Slab provides a high-density, low-porosity surface for heavy-duty installations. This natural stone, also known as Star Galaxy, features a deep black base with distinct copper or gold-colored broncite flecks. It meets the requirements for high-traffic commercial surfaces and premium residential kitchen worktops.
Built for the Job
Fabricators and contractors specify this material for areas requiring extreme thermal resistance and mechanical durability. Unlike engineered quartz or synthetic composites, this natural igneous rock handles direct contact with hot cookware without scorching or deforming. The dense mineral structure ensures minimal water absorption, which is critical for maintaining hygiene in food preparation zones and wet areas.
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Kitchen countertops and island units in commercial and residential builds.
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Heavy-duty flooring and staircase treads in high-footfall public buildings.
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Internal and external wall cladding for architectural feature sections.
Product Highlights
- Structural Hardness
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A Mohs scale rating of 6 to 7 ensures the surface remains resistant to scratching from standard steel utensils and tools.
- Thermal Stability
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- Withstands temperatures up to 250 degrees Celsius without structural failure.
- Low thermal expansion coefficient prevents stress fractures during rapid cooling.
Technical Specifications
| Specification | Detail |
|---|---|
| Material Type | Natural Granite (Gabbro/Norite) |
| Density | Approx. 2,840 kg/m³ |
| Water Absorption | 0.03% – 0.05% |
| Compressive Strength | 190.70 MPa |
| Thickness | 20mm (+/- 1mm) |
What’s Included
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1 x Polished Granite Slab (Dimensions vary by individual stock piece)
On-Site & Workshop Notes
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Always use diamond-tipped wet saws for cutting to prevent edge chipping and manage silica dust.
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Ensure cabinetry and sub-structures are leveled to within 2mm to avoid stress points on the stone.
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Apply a high-quality penetrating sealer after final installation to enhance stain resistance against acidic liquids.
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Account for a weight of approximately 58kg to 62kg per square meter when calculating structural load requirements.
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