Black Quartz Stone Slab
Composition: 93% Natural Quartz, 7% Polymer Resin & Pigments
Surface Finish: Polished Size: 1600x3200 mm, 1800x3200 mm
Thickness: 15/18/20/30 mm
Thickness Tolerance: ±0.5 mm
Product Overview
Product Overview
Smarter Stone produces Calacatta Black Engineered Quartz slabs engineered from 93% high-purity natural quartz sand and 7% unsaturated polyester resin with mineral pigments. Utilizing high-vacuum compaction and 100-ton hydraulic pressing, the resulting Nero Marquina quartz stone delivers high structural density without internal voids or micro-fissures typical of natural dark marble.
Our production facility operates automated batching systems to ensure shade stability across large-scale commercial manufacturing runs. As a single-source manufacturer, we process jumbo slabs (3200x1600mm, 3200x1800mm) in 15mm, 18mm, 20mm, and 30mm thickness options to support stone distributors, countertop fabricators, and commercial building contractors.
Technical Specifications
| Physical & Technical Property | Test Standard | Specification Value |
| Material Type | Artificial Quartz Stone | Engineered Quartz Composite |
| Material Base / Quarry Origin | High-Purity Quartz Aggregate | Factory Synthetic Production (China) |
| Mohs Hardness | EN 101 / Mohs Scale | Rating 7.0 |
| Water Absorption (%) | ASTM C373 | < 0.03% |
| Compressive Strength (MPa) | ASTM C170 | ≥ 215 MPa |
| Flexural Strength (MPa) | ASTM C880 | 42 - 52 MPa |
| Density (g/cm³) | ASTM C97 | 2.38 - 2.45 g/cm³ |
| Abrasion Resistance | EN 14617-4 | Class 4 / High Durability |
| Thickness Tolerance | Internal Gauge Standard | ±0.5 mm |
| Available Finishes | Optical Reflectometer | Polished (>90 Gloss Units), Honed |
| Certified Applications | Architectural Specifications | Kitchen Countertops, Vanity Tops, Cladding |
Quality Control
Shade & Pattern Consistency: Slabs are inspected under controlled LED illumination. Black quartz slabs with white veins are indexed into tonal groups to eliminate visual variance across multi-slab architectural wall or countertop layouts.
Dimensional & Surface Calibration: Thickness tolerance is checked across 9 grid points using digital calipers to maintain ±0.5mm variance. Surface flatness is measured with precision steel straightedges, guaranteeing warping remains within ≤0.5mm.
Defect Screening: Slabs undergo optical inspection for resin spots, pinholes, color contamination, or micro-fractures. Any non-conforming slabs are removed before processing.
Fumigated Export Packaging: Slabs are protected with plastic film, stacked face-to-face, and bundled into heavy-duty ISPM-15 compliant fumigated wooden A-frames equipped with corner protection and high-tensile steel straps.
FAQ
Q: Q: Does dark quartz require special maintenance or sealing to prevent micro-scratching and finger marks on polished surfaces?
A: A: No protective sealers are required because engineered quartz is non-porous. To maintain deep black gloss levels, clean daily with warm water and neutral pH liquid soap. Avoid abrasive scouring pads to prevent surface micro-dulness over long-term commercial use.
Q: Q: How does your factory maintain background color uniformity across large-volume black quartz slab orders?
A: A: We use automated raw material weighing systems to control pigment ratios precisely. Production runs use raw materials from single raw quartz batches, and finished slabs are sorted visually to ensure uniform tone across multi-container shipments.
Q: Q: What adhesive formulations and joint configurations are specified for installing black and white quartz slabs?
A: A: Use two-part dark-pigmented or clear reactive acrylic resin adhesives formulated for quartz stone. Maintain joint gap tolerances of 1.5–2.0mm to accommodate structural movement, and ensure full adhesive bed coverage behind vertical wall panels.
Hot Tags: black quartz stone slab, China black quartz stone slab suppliers, factory
Previous
No InformationSend Inquiry
