Brown · Semi-precious

Brown Onyx

Dark chocolate banding with amber transmission.

Family business since 1991 · Factory in Alexandria · 50 % in advance · 30 % on approval after production · 20 % before shipping · Reply within one working day

Brown Onyx — semi precious slab
Polished slab

Drag the slab to turn it, or use the arrow keys. Switching finish re-renders the surface — polished throws a hard specular, the abraded finishes open the surface up and knock the colour back.

Brown Onyx does less than any other onyx in the range with the light off, and more than any of them with it on. Unlit it is close to opaque, a dark chocolate surface with the banding barely readable, easily taken for a dark marble. Put a light behind it and the bands come up amber against a near-black ground and the panel opens completely. It is the largest gap between lit and unlit of anything we handle, which makes it a lighting decision before it is a stone decision: specified without a light source, most of what you are paying for never appears. Every application listed for it is vertical or lit — backlit panels, bar fronts, feature walls, reception desks, lighting — and none of them is a horizontal work surface. Polished or honed, slabs and cut-to-size, on partner-supplied imported block.

Onyx Miele is warm in both states, honey lit and honey unlit. Brown Onyx only gets there with a light behind it, and without one it is a considerably darker and flatter surface.

Material
Semi-precious
Colour
Brown
Origin
Partner supply — imported block
Availability
Partner supply — enquire
Finishes
Polished, Honed
Formats
Gangsaw slabs, Cut-to-size

Request a quote for Brown Onyx Request a sample

Samples are 10 × 10 cm as standard and go out by courier.

Or ask for a sample on WhatsApp

Photographs

Brown Onyx in the yard

Photographs of our own blocks, slabs and finished work. Slab photography shows one slab — the block it came from is what you are quoted against.

Laid out

Brown Onyx across a floor

A photograph shows one slab on a stand. This shows the stone tile after tile — where the pattern repeats, how far the tone drifts across a batch, and what the joint does to it. Every tile here is cut from a different part of the surface, the way material comes out of a real crate.

Brown Onyx tile — semi-precious stone

Indicative layout. Tone drift is deliberate — no two tiles from one batch match exactly, and a laid floor should never look like one photograph repeated.

In the room

Brown Onyx against your wall colour

Nobody buys stone on a white background. Put Brown Onyx on the floor, up the wall or across a worktop, set the colour it will actually sit against, and change the light — the same three questions every client asks on a site visit, answered before the sample ships.

Brown Onyx tile — semi-precious stone
Apply to
Background colour
Laid as Joint
Light

A scene, not a render of your project: proportions are indicative and colour on a screen is never the colour in a room. Send us the drawings and we will lay the real slab sizes out against your setting-out.

Surface

Brown Onyx, close up

The slab above turns; this is the same stone at the size it sits in your hand. Change the finish and it re-cuts.

Brown Onyx surface, close up — semi-precious stone

Roughly a 130 mm span of Brown Onyx, polished. A rendered preview, not a photograph of stock — ask for a physical sample before you specify.

Specified for

Where Brown Onyx is used

  • Backlit panels
  • Bar fronts
  • Feature walls
  • Reception desks
  • Lighting

Suitability depends on the finish, the thickness and the exposure. If you are specifying for external cladding, wet areas or heavy traffic, send us the detail and we will tell you what we would put in that position.

Technical

Onyx — typical range

PropertyTypical valueStandard
Bulk density2,600 – 2,750 kg/m³EN 1936
Water absorption0.10 – 0.60 %EN 13755
Flexural strength6 – 12 MPa (resin-backed)EN 12372
Light transmissionTranslucent at 15 – 20 mm—
Mohs hardness3 – 4—
BackingFibreglass mesh and resin as standard—
Not recommended forFlooring, external use, acidic wet areas—

These are indicative ranges for this stone family, published so you can size a design early. They are not a test certificate. For the stone you select we arrange water absorption, flexural strength and abrasion tests at an accredited laboratory before you close a specification.

Formats

How Brown Onyx is supplied

Gangsaw slabs

Full-size slabs from the gangsaw. Marble typically 2.6 – 3.0 × 1.6 – 1.9 m in 2 cm and 3 cm; granite 2 cm and 3 cm. Bundled by block so vein sequence is preserved.

Cut-to-size

Worked to your drawings — worktops, vanity tops, cladding panels, mitres, cut-outs, drainage grooves, undermount polishing. Supplied piece-marked to a setting-out plan. How a cut-to-size order runs

Asked about this stone

Brown Onyx — questions buyers ask

Do I have to see it lit before specifying it?

Yes. A sample on a desk tells you almost nothing here, because the amber only exists with light behind it — put your own light source behind the sample, at the thickness you intend to build.

What does it look like with the lighting switched off?

Dark brown and nearly flat, closer to a dark marble than to an onyx. If the panel sits somewhere that will be unlit for much of the day, decide whether that state is acceptable before committing.

Polished or honed for a backlit panel?

Both are offered. Polished keeps more depth in the dark ground when the light is off; honed removes the reflections that a dark glossy panel picks up from the room around it.

Can it be book-matched?

Book-matching is not among its listed uses — the value in this stone is the transmission rather than the figure. If you want a mirrored feature panel, Red Dragon Onyx and Onyx Miele Flower are the two in the range set up for it.

Get a quote on Brown Onyx.

Send the stone, the finish, the thickness and the destination port. You get a quote with an FOB and a CIF price, a lead time and photographs of the actual material.

Family business since 1991 · Factory in Alexandria · 50 % in advance · 30 % on approval after production · 20 % before shipping · Reply within one working day

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