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Citadel Stone offers premium black basalt slabs in authentic sawn/natural finish—large-format volcanic stone showcasing the raw, unrefined beauty of nature’s most durable material. Perfect for custom paving, dramatic feature walls, outdoor kitchens, water features, and architectural installations. Our basalt slabs combine ancient volcanic strength with contemporary design versatility. Each slab retains the honest character of quarried stone, providing architects, designers, and discerning property owners with genuine natural material for projects demanding both visual impact and exceptional performance.
Our black basalt slabs feature sawn/natural finish surfaces that preserve the stone’s authentic volcanic character immediately after quarrying and cutting. Unlike polished, honed, or heavily textured finishes requiring extensive processing, the sawn/natural surface showcases basalt exactly as nature created it—with subtle saw marks, natural mineral variations, and organic texture that celebrates rather than conceals the stone’s volcanic origins.
Available in large slab formats ideal for custom fabrication, these premium basalt pieces enable seamless installations with minimal joints, dramatic runs without visible seams, and architectural elements scaled to modern design requirements. The deep black coloration with occasional charcoal variations provides sophisticated neutrality that complements diverse design aesthetics while the raw surface finish adds authentic material character increasingly valued in contemporary architecture.
What Makes This Finish Unique: Sawn finish results from diamond-blade cutting during quarry processing, creating smooth yet textured surfaces that retain visible linear marks from the sawing process. These subtle striations add organic character and directional interest while maintaining relatively flat, workable surfaces suitable for various paving and installation applications.
The “natural” designation indicates minimal post-cutting processing—no grinding, polishing, flaming, or aggressive texturing. The stone appears much as it did when extracted from the earth, preserving authentic volcanic character and natural mineral patterns. This honest approach resonates with design trends favoring genuine materials, industrial aesthetics, and connections to natural origins.
Surface Characteristics:
Large Format Slabs:
Extra-Thick Formats:
Custom Sizing: Slabs can be cut to project-specific dimensions for:
Transform your outdoor spaces with our dramatic black basalt paving that combines volcanic durability with sophisticated contemporary aesthetics. Large-format slabs create seamless runs across patios, walkways, and pool decks, minimizing grout lines to expand the visual sense of space. The textured natural finish provides essential slip resistance and authentic material character that elevates landscapes beyond standard concrete or sandstone installations.
Basalt’s exceptional density resists scratches from garden furniture and heavy foot traffic, while its volcanic composition withstands freeze-thaw cycles and intense UV exposure without fading. When properly sealed, the surface resists staining from BBQ grease, leaf tannins, and organic debris. The deep charcoal coloration offers a striking contrast against vibrant green lawns and blue pool water, while effectively concealing minor dirt between cleanings.
Design Considerations: Use large-format slabs to create a modern, monolithic look. Pair with sleek glass balustrades and architectural planting for a minimalist aesthetic, or combine with timber decking and corten steel for a warm, organic texture.
Create stunning focal points with large-format basalt slab cladding on interior feature walls, fireplace surrounds, accent columns, or exterior building facades. The dramatic scale of slab installations minimizes joint lines while the natural finish adds textural depth and authentic material presence. Basalt’s neutral dark tones provide sophisticated backdrop for artwork, furnishings, and architectural lighting.
Interior applications include: living room accent walls, bedroom headboard walls, bathroom shower surrounds, lobby feature walls, and commercial focal points. Exterior applications: building entry facades, outdoor fireplace surrounds, privacy walls, and architectural screening elements.
Bring spa-like sophistication to bathrooms with basalt slab vanity tops, tub decks, and shower wall panels. The stone’s natural moisture resistance (when sealed) and exceptional durability suit bathroom environments perfectly. Large slabs enable seamless vanity runs and dramatic tub surrounds without visible joints interrupting the visual flow.
The dark coloration conceals water spots and soap residue while providing elegant contrast to white fixtures and light tile. The natural finish adds organic texture that softens contemporary bathroom aesthetics while maintaining easy-clean practicality.
Pool Coping & Deck Accents: Use thick basalt slabs for pool coping, creating smooth edges with volcanic durability. The heat-resistant stone remains comfortable underfoot while resisting pool chemicals and constant water exposure.
Stepping Stones & Pavers: Custom-cut slabs create dramatic large-format stepping stones through gardens, oversized pavers for modern patios, or monumental entry stones that make bold design statements.
Water Features: Basalt’s water resistance and visual affinity with water make it ideal for waterfall edges, fountain surrounds, koi pond borders, and stream beds. The dark stone creates stunning contrast with moving water.
Outdoor Tables & Benches: Fabricate custom outdoor furniture using thick basalt slabs—dining tables, coffee tables, bench tops, and serving surfaces that withstand weather while providing unique natural stone character.
Citadel Stone partners with experienced fabricators offering complete custom services:
Edge Profiles: Straight, beveled, bullnose, ogee, waterfall, mitered, and custom profiles to match design specifications.
Cutouts: Precision sink cutouts, cooktop openings, faucet holes, drain channels, and specialty penetrations fabricated to exact measurements.
Shaped Elements: Curved edges, radius corners, angled cuts, and complex geometries accommodating unique architectural requirements.
Surface Modifications: Additional finishing options available—honing for smoother feel, flaming for enhanced texture, or bush hammering for specific applications.
Our fabrication partners provide:
Exceptional Durability: Basalt’s volcanic origin creates one of earth’s hardest natural stones, exceeding most granites in compressive strength while providing superior abrasion resistance. Properly installed basalt slabs deliver 50-100+ years of reliable service in demanding applications.
Superior Heat Resistance: Formed at temperatures exceeding 2,000°F, basalt handles kitchen heat, outdoor grilling environments, and fireplace installations without damage. Hot pans placed directly on sealed basalt surfaces cause no harm—though trivets are recommended to prevent thermal shock on cold stone.
Moisture & Stain Resistance: Natural low porosity (<1% water absorption) combined with quality sealing prevents moisture penetration and staining. The dense stone resists kitchen oils, wine, acidic foods, and outdoor environmental exposure when properly maintained.
Weather Resilience: Freeze-thaw testing exceeding 300 cycles confirms basalt’s cold-climate performance. The stone withstands seasonal temperature swings, heavy rain, snow, ice, and intense sun without cracking, spalling, or degradation.
Chemical Stability: Basalt’s silicate composition resists acids, alkalis, pool chemicals, cleaning products, and environmental pollutants that damage limestone, marble, or concrete. This chemical stability ensures lasting performance in kitchens, bathrooms, and outdoor applications.
Initial Sealing Requirements: Sawn/natural finish basalt benefits significantly from penetrating sealer application protecting the porous surface from staining and moisture absorption. Apply quality impregnating sealer formulated for dark stones before and after installation completion.
Routine Maintenance:
Resealing Schedule:
Test Sealer Effectiveness: Place water droplet on stone surface. If water beads and remains on surface 10+ minutes, sealer protection remains adequate. If water absorbs within 5 minutes, resealing is recommended.
Modern Industrial: Combine sawn basalt slabs with exposed steel beams, concrete floors, and Edison bulb lighting. The raw stone finish complements industrial materials while adding natural warmth.
Organic Contemporary: Pair black basalt counters with white oak cabinetry, natural fiber textiles, and living plant walls. The volcanic stone grounds modern spaces with earth-connected authenticity.
Minimalist Sophistication: Use basalt slabs in all-white kitchens for dramatic contrast. The dark stone becomes sculptural element against pristine white cabinetry and walls.
Rustic Modern: Combine basalt with reclaimed wood, weathered metals, and stone accent walls. The natural finish basalt bridges rustic materials with contemporary design.
Monochromatic Drama: Create all-dark interiors using basalt counters, charcoal cabinetry, black fixtures, and dark wood floors. Add brass or gold accents for warm metallic contrast.
Premium Quarry Selection: Direct relationships with select basalt quarries ensure consistent color, superior density, and structural quality.
Large Format Availability: Extensive slab inventory in multiple thicknesses enables fast delivery for most projects with custom sizes available.
Fabrication Network: Established partnerships with experienced fabricators throughout the United States ensure professional results.
Technical Expertise: Decades of natural stone experience inform our slab selection guidance, application recommendations, and installation support.
Quality Assurance: Rigorous inspection verifies structural integrity, dimensional accuracy, and absence of defects before shipping.
Competitive Pricing: Direct sourcing and efficient operations deliver premium basalt slabs at fair market rates.
Nationwide Delivery: Careful packaging and coordinated logistics ensure slabs arrive safely anywhere in the continental United States.
Project Support: From material selection through installation completion, our team provides guidance ensuring successful outcomes.
Citadel Stone – Authentic Volcanic Stone for Distinctive Projects
Product specifications and pricing subject to change. Contact Citadel Stone for current inventory, slab photos, and project-specific recommendations.
Toughest Natural Stone: Citadel Stone Basalt Slabs stand out as the sturdiest natural stone in the world, ensuring enduring strength for your projects. This key feature emphasizes the exceptional durability of the product, providing a reliable foundation for various applications. Choose Citadel Stone Basalt for a flooring solution that not only enhances the aesthetic appeal but also guarantees long-lasting durability and resilience, making it a solid choice for a variety of projects.
Versatility: Ideal for a range of applications, these fancy tiles are perfect for both indoor and outdoor use. From walling and flooring to coping stones and cladding, they offer versatile solutions to elevate your spaces. The key feature of versatility highlights the adaptability of Citadel Stone Basalt tiles, making them a versatile and practical choice for enhancing various areas of your projects. Whether you’re designing indoor spaces or transforming outdoor landscapes, these tiles provide flexible solutions to meet your diverse needs.
Popular Choice: Citadel Stone Basalt slabs are the best non slip paving slabs in Arizona and the United States. The preferred selection for challenging hard landscaping projects. Their popularity stems from a combination of durability, versatility, and aesthetic appeal. The key feature of anti-slip performance underscores the tiles’ capability to provide a safe and secure surface in challenging environments. Whether used in walkways, patios, or other outdoor spaces, these tiles offer reliable traction while maintaining their durability and aesthetic appeal. Choose Citadel Stone Basalt tiles for a solution that prioritizes safety without compromising on style and resilience.
