Case Study / 01 Residential

The Lumina Penthouse
Kitchen
Transformation

Achieving the luminous Onyx aesthetic with extreme durability.

The Lumina Penthouse Kitchen Transformation
Cristallo Onyx curved kitchen island detail
CNC-cut curve / Cristallo Onyx
Project TypeLuxury Residential
MaterialFuntek 12mm Cristallo Onyx
Key CraftCNC Curved Edge / Fluted Integration
LocationNew York, NY
The brief

The Vision & The Hurdle

When the client first approached us, they had a very clear vision: a central kitchen island glowing with the translucent beauty of natural Onyx. But anyone who cooks knows the reality of natural Onyx—it's fragile, stains easily from wine or lemon juice, and is a nightmare to maintain in a busy kitchen.

The second hurdle? The design featured a stunning fluted wood base with a tight curve. They needed a stone that could be machined flawlessly to match that exact radius without chipping.

Flawless Integration
A sculptural island designed as the room's quiet centrepiece.
How we worked together

From a reference image to an installable package.

The first message gave us an aesthetic direction, not a production-ready brief. We turned it into a sequence of measurable decisions: slab selection, final radius, sink cut-out, seam position, crate size and a delivery route that could actually reach the apartment.

01 Discovery

We translated the reference

The client sent a mood image and a preliminary plan. We asked what mattered most: the luminous Onyx character, the uninterrupted living-room view and a surface that could handle daily cooking without the maintenance of natural Onyx.

02 Technical check

We closed the missing details

Before pricing, we requested the final CAD/DXF, sink model, faucet position, finished 50mm radius, overhang, preferred seam direction and cabinet shop drawing. We also asked for lift, doorway and loading-access dimensions.

03 Quotation

We made the cost visible

Our quotation separated slabs, CNC fabrication, dry layout, protective packing and freight. The client could see which decisions affected price instead of receiving one unexplained total.

04 Coordination

We solved the route to site

We compared port delivery with door-to-door service, confirmed the building's scheduled delivery requirement and matched the crate size to the final access route before releasing fabrication.

Transparent quotation What we priced separately
Material
12mm Cristallo Onyx, slab quantity, selected finish and cutting allowance.
Fabrication
CAD nesting, CNC cutting, 50mm finished radius, sink cut-out, edge finishing and dry layout.
Packing
Surface film, foam isolation, reinforced edge guards and numbered timber crates matched to the installation drawing.
Freight
Door-to-port and door-to-door options, export documents and delivery coordination shown as separate choices.

We showed each cost separately so the client could compare options without hiding fabrication or freight inside the slab price.

Lumina project chatReconstructed project communication
Day 1 · Design review

We love the glow of natural Onyx, but this island will be used every day. The front has a tight 50mm curve. Can your material follow it without making the edge look heavy?

Yes. Before we quote, please send the final DXF, sink specification, exact finished radius and cabinet shop drawing. We also need the lift and doorway sizes plus the New York delivery postcode so we can plan the crate and freight correctly.

The radius is 50mm after finishing. From the living room, we do not want to see a seam. The building only accepts booked deliveries and there is no forklift at the entrance.

Understood. We will place any necessary joint away from the main sightline and send the slab layout for approval before cutting. The quote will show material, fabrication, packing and freight separately, including a lift-gate delivery option.

Day 3 · Cost review

We revised the nesting around the sink cut-out and side returns to improve slab yield without changing the 50mm curve. Door-to-door costs more than port delivery, but it removes a separate destination hand-off. Both options are listed for comparison.

Keep the door-to-door option. Please send dry-layout photos before crating and label every piece to match the installation drawing.

The last metre matters

We planned the delivery before we cut the slab.

A finished island can leave the factory perfectly and still fail at the building entrance. Before production, we checked the destination, access route and unloading method, then matched the packing and freight option to those constraints.

  • 01We confirmed the postcode, delivery appointment rules, lift-gate requirement, doorway and lift dimensions before finalizing the largest safe crate size.
  • 02Each finished piece received surface protection, foam separation and reinforced edge guards. Crates and pieces were numbered to match the installation drawing.
  • 03We photographed the dry layout, finished edges and closed crates, then shared the packing list and dimensions before collection.
  • 04The client chose the door-to-door option. We coordinated the booked arrival window and kept the installer working from the same numbered drawing used by our packing team.
The resolution

Where Craftsmanship Meets Technology

We knew our 12mm Cristallo Onyx sintered stone was the perfect fit. It captures the incredible crystalline depth of natural stone, but it’s engineered to be tough enough for daily, heavy-duty life.

01 Built for real life

Spill red wine or set down a hot pan? No problem. The zero-porosity surface handles it all without leaving a mark.

02 Cut to the curve

Using 1:1 CNC water-jet cutting, we achieved a flawless 50mm radius curve that hugged the fluted oak cabinetry perfectly.

03 Quiet integration

We integrated the undermount sink seamlessly to keep that clean, monolithic look completely uninterrupted.

Cristallo Onyx curved kitchen island detail
CNC-cut curve / Cristallo Onyx
Integrated sink and stone worktop detail
Integrated sink / seamless finish
50mm

A precise radius matched to the fluted oak base

Material focus

Cristallo Onyx

A luminous mineral surface selected for visual depth, precise fabrication and everyday resilience.

Explore the material
Cristallo Onyx

"Working with Funtek allowed us to push the boundaries of kitchen design. The translucency of their material combined with industrial-grade strength meant I could finally give my client the 'Onyx look' without any of the maintenance nightmares."

Elena Moretti Lead Interior Designer, Moretti & Co.
Project design lead
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FAQ

Common Questions.

Absolutely. One of the main reasons the designers chose Funtek for the Lumina project was our material's controlled translucency. Unlike natural Onyx, which can have unpredictable "dead spots," our sintered stone offers consistent light transmission. When back-lit with LED panels, the island provides a soft, ethereal glow, making it a perfect functional art piece for high-end residential interiors.

That’s the "human" advantage of this material. In this project, the owner wanted the look of premium stone without the constant worry. Our Cristallo series has near-zero porosity, meaning red wine, lemon juice, or olive oil simply wipe away without staining. Because it’s high-density, it’s also highly heat-resistant—you can move a hot pan from the stove directly onto the island surface without a trivet.

Precision is in our DNA. We used 1:1 CNC water-jet cutting technology to match the architectural radius of the custom fluted cabinetry. Sintered stone is notoriously difficult to curve without chipping, but our specific "high-tension" manufacturing process allows the slabs to be machined with surgical precision, resulting in the flawless 50mm radius corners seen in the gallery.

Unlike natural marble or granite, Funtek sintered stone never needs to be sealed or re-sealed. It is composed of 100% natural minerals pressed under extreme pressure. It is NSF-certified, meaning it is bacteriostatic and completely safe for direct food contact. It won’t harbor bacteria or mold, which is vital for an open-plan kitchen island where food is often prepared and served.

For the Lumina project, we utilized our 1600x3200mm large-format slabs to ensure the main workspace was entirely seamless. Any necessary joins (such as around the integrated sink) were color-matched using specialized epoxy resins to make them virtually invisible to the naked eye. This creates the "monolithic" (single block of stone) look that defines ultra-luxury kitchen design.