A grand modern lobby with a textured stone accent wall, amber linear lighting, warm interior glow
A private studio · Sydney, AU · est. 2026

The quiet
architecture
of light.

Hypermassive designs and installs backlit onyx walls — the lit-up luxury stone surfaces that turn a private room into a held breath. One wall, quarried, finished, lit, and installed. By appointment only.

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— Manifesto

Most stone is sold. We don't sell stone. We work with clients who have already decided they want a room that does something — something quieter, slower, more considered than the alternatives — and we help them arrive at a wall that does exactly that. A wall that glows. A wall that turns off the rest of the room.

The work is small by design. One wall, sometimes two. We don't do facades, we don't do fitouts, we don't do commercial floor plates. We do the thing we know: translucent stone, lit from behind, in a private interior, where the room is the client.

We source directly. We commission the slab selection. We work with one lighting engineer in Sydney, one structural team, and one tiler we trust. We don't subcontract to anyone we haven't sat across from. We work slowly because the material is slow — honey onyx takes forty million years to form, and we don't think it should be hurried by the calendar.

What we make is not for everyone. It is for the person who has decided they would like a wall they can sit next to every evening for twenty years, and never quite finish noticing.

— Hypermassive Studio, Sydney — AWST

The walls
we have lit.

One product — the backlit onyx wall — in five onyx variants. Each wall is a private commission: quarried, finished, lit, and installed. No slabs, no stock, no off-the-shelf. The wall is the work.

N° 02

White Onyx Wall

Translucent ivory with the subtlest tan banding. Lit warm, the wall reads as parchment at sunset. Lit cool, it reads as snow at first light. The room's quietest surface, with the room's most deliberate light.

StoneWhite Onyx — Iran, Khorasan
Light2700–4000K
PlacementLibrary · study
Engagement8–14 months
N° 03

Green Onyx Wall

Deep emerald to jade, with occasional white crystalline veining that catches the backlight and reads as a held constellation. Used sparingly — one wall in a room is enough. Most often commissioned as a single feature wall behind a long dining table.

StoneGreen Onyx — Pakistan, Balochistan
Light3000–3500K
PlacementDining · entry
Engagement10–14 months
N° 04

Pink Onyx Wall

The rarest of the studio's commissions. Blush to salmon, with occasional crystalline veining. Lit warm and dim, the wall reads as the last light of an evening. Most often commissioned for a bedroom or a dressing room.

StonePink Onyx — Iran, Azerbaijan
Light2400–2700K
PlacementBedroom · dressing
Engagement12–14 months
N° 05

Blue Onyx Wall

Pale glacier-blue with white banding, lit from behind the wall reads as ocean at depth. The studio's only cool-stone commission — used in wet areas, saunas, cellar entries, and a small number of contemporary interiors.

StoneBlue Onyx — Argentina, San Luis
Light4000–5000K
PlacementWet area · cellar
Engagement12–14 months
N° 06

The Bespoke Wall

The studio's principal commission. We work with the principal, the architect, the lighting engineer, and the builder, from first sketch to final calibration. One wall. The whole room around it. The wall is the work; the work begins with you.

StonePer commission
Light2400–5000K
Engagement8–14 months
From$A 280K fully installed
*

A photographic catalogue of recent commissions is in preparation. By appointment, the studio welcomes visits to the showroom in The Black Garter, Sydney, where four of the five onyx variants are installed in-situ, lit as we would light them in your home.

A wall, lit slowly,
does more than a wall, lit bright.

— studio note, undated

A luxurious hotel corridor with warm amber lighting and polished reflective stone surfaces
— Studio

We design
the room around
the wall.

Architectural consulting for private residences and a small number of hospitality projects each year. We work with the principal, the architect, the lighting engineer, and the builder, from first sketch to last installation.

01
Architectural Consulting
Brief, sketch, structural review, lighting design, on-site supervision through install.
02
Stone Selection & Sourcing
Direct-from-quarry sourcing. Slab selection with the principal in person. Never bulk-stock.
03
Lighting Engineering
Backlight design at 2700–5000K, dimming curves, circadian integration, on-site calibration.
04
Install & Aftercare
Specialist tiler, structural fixings, lifetime support on the lighting system and stone.
Elegant hotel lobby with marble columns, chandelier, and warm interior lighting
— The Showroom

A wall, in person,
is better than
any photograph.

Our showroom is one of the rooms of The Black Garter, Sydney — a private members' club of which we are the architects of record for the interior. Visitors can see backlit honey onyx, white onyx, green onyx, and translucent quartzite, installed in-situ, lit as we would light them in your home.

The Black Garter — Level 4
88 George Street, Sydney NSW 2000
Australia
Book a private viewing
— Process

Four meetings.
Eight to fourteen months.

The work moves slowly because the material is slow. We meet four times across the project. Between meetings, the stone is being cut, the lighting is being engineered, the tiler is waiting for the slabs.

01

Brief

A 90-minute meeting at the showroom or your residence. We listen. We look at the room. We agree on what the wall will and won't do.

02

Selection

A second visit, often to the quarry or the stonemason. We pick the slab together. Two hours. We mark it.

03

Engineering

Six to ten months of cutting, structural review, lighting engineering. We send weekly photo updates from the workshop.

04

Install

One to two weeks on site. The tiler we trust, the lighting engineer we trust. One final calibration visit, three months later, by appointment.

— Atelier

The studio.

A studio of four. Two architects, one lighting engineer, one principal. We work as a single practice — no project is touched by fewer than two of us, and no project is touched by more than four. By appointment, the principal is available for a first conversation at the showroom.

A modern hotel lobby with seating area and decorative amber lighting, evening atmosphere