Onyx — The Stone That Holds Light From Within
Every natural stone has its own way of engaging with light. Marble reflects it. Travertine absorbs it. Limestone diffuses it softly. Onyx does something altogether different — it holds light inside itself, allowing it to pass through the stone and emerge as a warm, ambient glow that shifts with the time of day and the quality of the light source. In a sink, this creates an experience that is genuinely unlike anything else in interior design. The basin does not just sit in the space — it becomes luminous within it. Every sink in this collection is hand-carved from genuine natural onyx, produced entirely to order, and selected from blocks that meet a consistent standard of translucency, tone, and surface integrity.
The Character of Natural Onyx
Onyx is a banded chalcedony — a mineral formation that produces the most individual surface pattern of any stone used in interior design. Its bands of colour move through the stone in flowing, organic layers: warm golds and ambers in Honey Onyx, deep browns and toffee tones in Onyx Brown, cool whites and greens in rarer varieties. The translucent quality of onyx varies between blocks and even within a single block, which means the way light interacts with the finished sink is always unique to that specific piece of stone. No two onyx sinks will ever look alike — not because of craftsmanship variation, but because the material itself guarantees it. Every block is individually reviewed and selected to ensure the tone, banding pattern, and translucency level are consistent with the sample approved at the point of order.
Honey Onyx — Warmth, Amber, and Natural Luminosity
Honey Onyx is the most requested variety in this collection, and it is easy to understand why. Its warm golden and amber tones, layered in flowing horizontal bands across a translucent ground, create a material warmth that is unmatched in the natural stone palette. In a vessel sink, the exterior of the stone glows with a depth that shifts from pale gold in direct light to deep caramel in shadow — a quality that makes every moment of use feel considered and unhurried. Polished to a high finish, Honey Onyx becomes luminous. Honed, it takes on a warmer, more tactile quality that suits bathrooms where comfort is the design priority. In both cases, the translucency of the stone remains fully present and fully visible.
Onyx Brown — Depth, Richness, and Organic Drama
Onyx Brown offers a richer, darker expression of the same material family. Its deep brown and toffee-toned banding, layered against a translucent ground, creates a visual depth that reads almost like a landscape captured in stone. Where Honey Onyx is warm and golden, Onyx Brown is grounded and complex — suited to bathrooms and spaces where the design direction favours richness and material authenticity over brightness and contrast. The organic movement of the banding in Onyx Brown makes every vessel sink a genuinely unique piece, and the translucent quality of the stone means that even in a darker tone, light still finds its way through the material in ways that no opaque stone can replicate.
Every Mounting Type, Carved in Onyx
Our onyx sinks are available across the full range of installation types, each suited to a different design and practical context. Vessel and Bowl sinks are by far the most natural and most requested format for onyx — the full exterior of the stone is visible from every angle, and the translucent quality of the material is most dramatically expressed when the stone stands above the counter as a freestanding sculptural object. Backlit vessel installations — where a light source beneath the counter illuminates the onyx from below — are among the most striking effects achievable in any bathroom material, and onyx is the only stone that makes this fully possible. Wall Mount sinks project cleanly from the wall, allowing the banded tones of the onyx to float in the space as both a functional basin and a piece of wall-mounted sculpture. Undermount sinks are set below the countertop, allowing a coordinating onyx vanity top from our Slabs collection to flow from counter surface to basin interior as a single continuous stone surface. Pedestal and Freestanding designs allow the onyx to stand entirely alone — no vanity, no wall support — the stone providing both structure and statement in a single carved form. Drop-In sinks offer practical installation without any compromise to the full character of the material.
Every Shape, Produced to Your Exact Dimensions
Onyx sinks are produced in any configuration the space and brief require. Round and Oval shapes are the most natural fit for onyx in vessel format — the curved exterior allows the banding and translucency of the stone to wrap continuously around the piece, creating a sculptural quality that rectangular formats cannot replicate. Rectangular and Square forms suit contemporary bathroom schemes where the geometry of the stone is part of the design language, and the organic movement of the onyx banding provides a counterpoint to the clean lines of the vessel. Zero Radius sinks offer sharp corners for rigidly minimal spaces. Rounded Corner designs balance structure with softness — versatile across a range of bathroom styles. Trough sinks in onyx are a rare and genuinely extraordinary specification — the wide horizontal format allowing the full range of banding and tonal variation to extend across the entire basin in a single continuous surface. Corner formats bring the full translucent character of hand-carved onyx to space-constrained layouts without compromising material quality or finish standard.
A Note on Backlit Onyx Installations
Onyx is the only natural stone in the interior design palette that can be used in backlit applications to create a genuine glow effect from within the material itself. When a light source is positioned beneath or behind an onyx sink — integrated into the vanity unit or behind a wall panel — the stone becomes luminous, the banding is illuminated from within, and the piece transforms into something closer to a light installation than a bathroom fixture. This effect works most powerfully in vessel sink formats and in onyx vanity tops from our Slabs collection, where a continuous backlit stone surface can extend across the entire counter. For clients considering a backlit onyx installation, our team can advise on stone thickness, light source selection, and mounting requirements during the custom order process.
Custom Order — Every Detail Agreed Before Production Begins
Every onyx sink we produce is a fully custom order. Stone variety, dimensions, mounting type, bowl depth, surface finish, edge profile, drain placement, and faucet hole configuration are all specified at the point of order and confirmed before production begins. Because onyx is a premium natural stone with significant variation in translucency, banding pattern, and tone between blocks, each piece of stone is individually reviewed and approved against the sample confirmed at order stage — ensuring the visual character of the finished sink is consistent with what was agreed. We work directly with homeowners, interior designers, architects, and trade professionals throughout the process from first enquiry to final dispatch.
Complete Your Onyx Interior
An onyx sink becomes most impactful when the surrounding space is designed to allow its unique material qualities to lead. Our Slabs collection provides custom-cut onyx vanity tops dimensioned precisely to receive an undermount or drop-in sink as a seamless assembly — and in backlit configurations, a continuous onyx counter and basin surface creates one of the most dramatic effects available in contemporary bathroom design. For spaces where onyx is the statement material and the surrounding surfaces provide a calm, complementary ground, our Marble Tiles and Travertine Tiles collections offer natural stone options in restrained tones that allow the onyx to take full precedence. Those wishing to explore other distinctive stones in our collection will find the full range in our Marble Sinks collection, including Rosso Levanto, Toros Black, Calacatta, and Carrara White.
Care and Long-Term Performance
Onyx is a moderately hard natural stone that rewards careful sealing and gentle maintenance. Sealed correctly on installation and cleaned with products formulated for natural stone surfaces, an onyx sink will resist moisture and daily wear while retaining its translucency and tonal depth over time. Because onyx is more sensitive to acidic substances than harder marbles, our Care & Maintenance guide provides specific advice on the products and practices suited to onyx surfaces — including daily cleaning routines, resealing schedules, and the substances to keep away from the stone entirely. Our Stone Care & Sealers range includes professional-grade products formulated for onyx and other translucent natural stones. For structural and plumbing requirements by mounting type, our Installation Guide contains the full technical detail your fitter will need before the sink is placed.