Product Overview & Customization Capabilities
Guanmay Stone supplies premium Star White quartzite – a high-performance natural stone. Quarried from select sources including Turkey and China, this quartzite features a pure white to off-white base with subtle, delicate grey veining that adds depth and character without overwhelming the space.
Star White vs. Marble: Unlike white marble (Mohs 3–4), Star White quartzite is a metamorphic stone formed from quartz-rich sandstone under intense heat and pressure. This transformation results in a dense, interlocking crystalline structure dominated by quartz minerals, delivering Mohs hardness of 7 – significantly more scratch-resistant and durable than marble. This makes Star White quartzite an ideal material for stair treads, which endure continuous foot traffic, heel impacts, and abrasion from dirt and grit.
Stair tread fabrication: We produce custom stair treads in any dimension per project drawings. Standard thickness options include 20mm and 30mm. Nosing profiles available: eased edge, bullnose, half bullnose, and square edge. Matching risers, landings, and skirt boards can be supplied from the same slab batch to ensure colour and veining continuity across the entire staircase.
Back-Cut Fabrication – Seamless Installation:
Back-cutting is a precision fabrication technique where the underside edge of each stair tread is cut at a specific angle to create a tight, seamless joint with the riser or adjacent tread. This technique delivers:
Zero visible gaps: The back-cut edge eliminates the need for visible caulking or trim between tread and riser
Structural integrity: The angled cut provides a larger bonding surface for adhesive, creating a stronger joint
Clean sightlines: The finished staircase presents uninterrupted visual lines – essential for minimalist and contemporary designs
Faster on-site installation: Pre-fabricated back-cut treads reduce on-site cutting and fitting time by up to 40%
We offer both standard back-cut (single-angle) and double back-cut configurations depending on the stair design and installation method.
Surface finishes: Polished (high-gloss, enhances the pure white aesthetic and subtle veining), Honed (smooth matte, recommended for stair treads to reduce slip risk), Brushed (light texture).
Thickness options: 20mm (standard for residential stair treads), 30mm (recommended for commercial and high-traffic staircases).
Supply Logistics - FOB Xiamen
Star White quartzite offers exceptional durability for stair applications. Below are the physical properties based on industry-standard testing for quartzite materials:
| Parameter | Specification |
|---|---|
| Material Type | Natural Quartzite (Metamorphic) |
| Base Colour | Pure white to off-white |
| Veining | Subtle grey, delicate and uniform |
| Standard Slab Sizes | 2400x1200mm – 3000x1800mm |
| Finishes | Polished, Honed, Brushed |
| Application | Stair treads, risers, landings, countertops, wall cladding, flooring |
Stair tread-specific quality control:
Each tread is measured for length, width, and thickness consistency across the entire staircase set
Back-cut edges are inspected for clean, chip-free cutting
Matching treads and risers are numbered for installation sequence
Anti-slip surface treatment confirmed where specified
Packaging: Each stair tread is protected with film, edge guards, and corner protectors. Treads are packed flat in fumigated wooden crates with foam padding between each piece to prevent scratching and chipping. All items are prepared for seaworthy container shipment. Third-party inspection (SGS, BV) is available upon request.
Typical Application Scenarios
Staircases:
- Luxury villa staircases: Star White quartzite treads with back-cut edges and matching risers – honed finish for slip resistance
- Hotel lobby staircases: Large-format Star White quartzite treads with bullnose nosing – polished finish for dramatic impact
- Commercial building stairways: Durable Star White quartzite treads – 30mm thickness for high-traffic durability
- Residential staircases: Custom-sized treads with eased edge nosing – seamless integration with interior design
Additional applications:
- Kitchen countertops and islands: Star White quartzite benchtops – heat and scratch resistant for daily food preparation
- Bathroom vanity tops: Pure white quartzite vanities with undermount sinks
- Wall cladding and feature walls: Full-slab installations for living rooms, TV backgrounds, and reception areas
- Flooring: Large-format Star White quartzite tiles for residential and commercial spaces
- Fireplace surrounds: Heat-resistant quartzite cladding and hearths
FAQ
Q: What is back-cut fabrication for stair treads?
Back-cutting is a precision technique where the underside edge of each stair tread is cut at a specific angle to create a tight, seamless joint with the riser. This eliminates visible gaps, provides a larger bonding surface for adhesive, and delivers clean, uninterrupted sightlines for contemporary staircase designs.
Q: Is Star White quartzite suitable for stair treads?
Yes. With Mohs hardness of 7 and compressive strength of 150–200 MPa, Star White quartzite is highly resistant to scratching, abrasion, and impact – making it ideal for stair treads that endure continuous foot traffic. Honed finish is recommended to reduce slip risk.
Q: What thickness is recommended for Star White quartzite stair treads?
20mm thickness is standard for residential stair treads. 30mm thickness is recommended for commercial and high-traffic staircases, as well as projects requiring a more substantial visual presence.
Q: What is the minimum order quantity for bulk Star White quartzite stair treads?
MOQ is typically 50 square metres for factory-direct wholesale pricing. Full container loads offer the most competitive pricing for large-scale staircase projects. Sample treads are available for project evaluation.
Q: Does the factory provide matching risers and landings for stair treads?
Yes. We supply matching risers, landings, skirt boards, and all staircase components from the same slab batch to ensure colour and veining continuity across the entire staircase.
Packaging and Loading
Certifications
Contact Us
Submit your project drawings (CAD or PDF) for a free stone takeoff, fabrication quote, and FOB Xiamen pricing within 24 hours. Bulk project supply – full container capacity – consistent colour batch selection. Free slab samples available for client evaluation. Contact our project desk directly.