Custom Natural Stone Fabrication on Long Island
Fabrication and installation of marble, quartzite, granite, onyx, porcelain, and engineered stone for kitchens, bathrooms, fireplaces, outdoor kitchens, and architectural interiors throughout Long Island, New York.
Family-operated and shaping natural stone across the North Shore for over 40 years.
Full-Service Natural Stone Fabrication & Installation
From slab selection through templating, fabrication, and final installation, every stage is executed in-house at our Port Washington showroom and facility. We partner with homeowners, designers, builders and contractors across Long Island to deliver detailed stone installations built to last.
Kitchen Countertops
Countertops, waterfall islands, backsplashes, mitered edges, custom details.
Bathroom Vanities
Vanities, shower walls, integrated sinks, tub surrounds.
Custom & Specialty
Fireplaces, feature walls, furniture, architectural elements.
Project Highlights
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![arabescato marble island countertop in long island new york]()
The East Coast Farm House
Arabescato Corchia marble island countertop with bold natural veining. Fabricated in-house by Intermarble for a residential project on Long Island. View more similar projects.
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![intermarble custome onyx and quartzite side table pieces]()
Hamptons Designer Showhouse 2025 – Sag Harbor
Taj Mahal quartzite and green onyx — sculptural side tables fabricated and designed in-house by Intermarble. Curated by JMY Interiors for the Hamptons Designer Showhouse, presented by Cottages & Gardens in support of Stony Brook Southampton Hospital.
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![intermarble cararra marble fireplace installation long island new york]()
Monochrome Living
Arabescato Turqouise marble fireplace surround, fabricated and installed by Intermarble in collaboration with Blake & Dane interior design studio. Sands Point, New York. View more similar projects.
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![green onice wet bar installation intermarble ny]()
Onice Wet Bar Installation
Green marble wet bar, fabricated at Intermarble for Reyes Bros Remodeling project. Port Washington, New York. View more similar projects.
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![Black Kenya marble bathroom vanity top with a plant and mirror reflecting decorative wall art and a towel.]()
Kenya Black Marble Vanity & Mirror Surround
Kenya Black marble vanity top and custom mirror frame surround in collaboration with Studio HP Designs for Sands Point, NY residence. View more similar projects.
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![Luxurious kitchen with black and gold stove, white carrara marble backsplash, white cabinets, and a bowl of oranges on the right.]()
The Kings Point Kitchen
Bookmatched Calacatta marble accent wall and backsplash by Intermarble for Jon Bijari Custom Homes. Kings Point, Great Neck NY residential project. View more similar projects.
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Dolomitic Marble Fireplace — Plandome Manor
Dolomite marble fireplace fabricated and installed by Intermarble. Plandome Manor, New York. View more similar projects.
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![Emperador marble bench featuring vertical slats, placed on a dark, textured floor.]()
Emperador Marble – Structural Bench
Structural bench in Emperador marble, designed in-house and commissioned by 18 Dock, a residential complex in Stamford, Connecticut. In collaboration with Stage A Space design firm. View more similar projects.
From Slab Selection to Installation
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We begin by reviewing layouts, drawings, and material options to align on scope and design intent. During slab selection, we offer optional digital stone visualizations to preview how veining, scale, and finish will appear within your space prior to fabrication.
This ensures confident material decisions before templating begins.
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Once materials are confirmed, precise digital templating is completed to capture exact dimensions and site conditions. Fabrication is carried out in-house at our Port Washington facility using controlled cutting, mitering, and finishing techniques to ensure accurate fit, clean seam placement, and continuity of veining.
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Our in-house installation team carefully delivers and sets each piece, aligning surfaces, edges, and transitions for a seamless final result. Attention to detail at this stage ensures structural integrity, visual consistency, and long-term durability.
Built on Craftsmanship. Backed by Experience.
Family-owned and operating for over 40 years, Intermarble combines modern fabrication technology with traditional hands-on craftsmanship.
Every cut, edge, and seam is executed with precision — because details matter.
Natural Stone & Material Selection
Every slab of natural stone is inherently one of a kind — shaped by geology, movement, and scale. We source marble, quartzite, granite, onyx, porcelain, and engineered surfaces from leading slab yards in New York and select international suppliers, curating material with attention to proportion, character, and long-term performance.
Marble
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Marble is widely used in high-end kitchens throughout New York and Long Island for its depth, movement, and timeless appeal.
Because marble is composed primarily of calcite, it is softer than quartzite or granite and can etch when exposed to acidic substances. Many homeowners, designers, and chefs still prefer marble for kitchen countertops, embracing the natural patina that develops over time.
If you prefer a pristine surface with minimal maintenance, quartzite may be a better fit. If you appreciate character and natural aging, marble remains a classic choice.
We guide each client based on lifestyle, cooking habits, and long-term expectations.
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Marble can be finished in several ways, the most common being polished and honed.
Polished marble has a reflective surface that enhances color and veining. It is slightly more resistant to staining but can show etching more visibly.
Honed marble has a matte finish with a softer appearance. It tends to show etching less dramatically but may absorb oils more easily.
The right finish depends on the application and desired aesthetic. We review samples during slab selection to determine the best option for your project.
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Marble is a porous natural stone and should be sealed upon installation. Periodic resealing helps protect against staining.
Routine maintenance includes:
Mild, pH-neutral cleaners
Avoiding acidic substances
Prompt cleanup of spills
With proper care, marble surfaces maintain their integrity for decades and develop a natural patina unique to each space.
Onyx
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Onyx is known for its translucency and layered mineral banding. When backlit, the stone reveals depth and movement that cannot be replicated by other materials.
Because onyx is softer and more delicate than marble or quartzite, it is typically used in feature installations such as:
Wet bars
Feature walls
Decorative panels
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Onyx is best suited for lower-traffic applications where its visual impact can be fully appreciated.
Proper fabrication and structural support are essential due to its fragility.
Quartzite
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Quartzite and marble may appear similar, but their performance differs significantly.
Quartzite is formed from sandstone that has undergone intense heat and pressure, resulting in a dense, durable stone composed primarily of quartz crystals. It is harder than marble and more resistant to scratching and etching.
Marble offers softness and patina. Quartzite offers durability with similar visual movement.
For high-traffic kitchens in New York and Long Island homes, quartzite is often selected for its resilience.
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Yes. Quartzite is one of the most durable natural stones available for kitchen countertops.
It resists:
Scratching
Heat
Etching
Quartzite is ideal for waterfall islands, large-format installations, and heavily used kitchens while maintaining a natural, elegant appearance.
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Quartzite should be sealed upon installation. While highly durable, it remains a natural stone and benefits from routine care using pH-neutral cleaners.
Proper fabrication and installation are essential to long-term performance.
Granite
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Granite remains one of the most durable and practical natural stones available. While certain color trends may shift over time, high-quality granite continues to be used in contemporary and traditional projects alike.
Modern granite selections feature subtle movement and refined mineral patterns suitable for luxury residential and commercial spaces.
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Granite is highly resistant to heat and scratching, making it suitable for:
Busy kitchens
Outdoor kitchens & BBQs
Commercial applications
Its durability makes it a reliable long-term surface material.
Quartz
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Quartz (often called engineered quartz) is a man-made surface made from natural quartz minerals combined with resins and pigments. The result is a consistent, non-porous material that’s durable, low-maintenance, and available in a wide range of colors and patterns—including marble-inspired looks.
Quartz is a popular choice for:
Kitchen countertops and islands
Bathroom vanities
Laundry rooms and mudrooms
Commercial interiors
Because it’s non-porous, quartz resists staining and does not require sealing.
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Yes—quartz is one of the best options for busy kitchens because it’s:
Non-porous (excellent stain resistance)
Low-maintenance (no sealing)
Consistent in pattern and color (great for clean, modern designs)
The main consideration: quartz is durable, but direct high heat (hot pans) can damage the resin binders. We recommend using trivets and avoiding placing hot cookware directly on the surface.
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Quartz: best for low-maintenance, consistent patterns, strong stain resistance.
Porcelain: best for heat/UV resistance, large-format minimal seams, outdoor applications.
Natural stone (marble/quartzite/granite): best for one-of-one movement and natural variation; maintenance varies by stone.
If you want a surface that looks refined and stays easy day-to-day, quartz is often the right call.
Porcelain
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Porcelain slabs are engineered surfaces available in large-format panels, allowing for minimal seams and full-height wall applications.
They are commonly used for:
Modern kitchens
Shower walls
Outdoor installations
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Porcelain is non-porous, UV-resistant, and highly resistant to staining and scratching.
It requires minimal maintenance and does not need sealing.
Start Your Project
Tell us about your space and we’ll guide you through material selection, fabrication, and installation.
FAQs
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Intermarble provides custom stone fabrication and professional installation throughout Nassau County, Suffolk County, and the greater New York area.
Most projects are located in Port Washington, Sands Point, Roslyn, Manhasset, Great Neck, Huntington, as well as the Hamptons, and other surrounding communities.
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Pricing depends on the material, slab selection, and project scope.
We provide custom quotes after reviewing your layout and slab selection, so you know exactly what to expect before moving forward.
Materials we work with range across: marble, granite, quartz, quartzite, onyx, and porcelain.
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Intermarble provides full-service stone fabrication and installation across Long Island.
From measurement to fabrication to installation, everything is handled in-house for better quality control and a smoother process.
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The best stone depends on how you use your kitchen:
Granite & quartzite → best for durability and low maintenance
Marble → best for design-forward spaces (develops patina over time)
Porcelain → modern, stain-resistant option
We guide you based on your lifestyle, not just appearance.
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Marble is one of the most beautiful materials available, but it does require maintenance.
It can etch and develop a natural patina over time, which some homeowners love.
If you prefer a lower-maintenance option, quartzite or leathered granite may be a better fit. -
Most projects take 2–4 weeks from final measurement to installation, depending on material availability and project complexity.
Because we fabricate in-house, we maintain better control over timing and quality.
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A waterfall island extends the stone down the sides of the island for a clean, continuous look.
It works especially well with materials that have strong veining.
We specialize in mitered edges and vein matching to ensure a seamless finish. -
Yes — and you should.
We guide you through full slab selection, reviewing veining, movement, and layout before cutting.
We can also provide digital previews/mockups so you can visualize the final result.
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For outdoor kitchens, durability is key.
We typically recommend:
Granite → highly durable and weather-resistant
Quartzite → strong and heat-resistant
Porcelain → modern and UV-resistant
These materials hold up well against sun exposure, temperature changes, and heavy use.
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Yes — stone is a great option for bathroom vanities.
Materials like marble, quartzite, and granite perform well in moisture-prone environments when properly sealed, while adding a clean, elevated look.
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Yes — we specialize in custom stone fabrication beyond countertops, including:
Fireplace surrounds
Feature walls
Dining tables
Bathroom vanities
Outdoor kitchens & bar areas
Each piece is made from natural stone slabs, making every project one of a kind.
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Yes — many of our clients work with us across multiple areas of the home.
We fabricate for:
Kitchens
Bathrooms
Outdoor spaces
Fireplaces & feature walls
Working with one fabricator ensures consistency in material, finish, and installation.