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Marble quarry at dawn, Alpi Apuane
Keturah Stones

Massa Carrara — Italia

The Apuan Alps are not conquered.
They are listened to. — Keturah Stones
Bianco Carrara

Bianco Carrara

Massa Carrara · Alpi Apuane

01 / 11
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Bianco Venatino

Bianco Venatino

Lasa · Val Venosta

02 / 11
Bianco Venato

Bianco Venato

Apuanes · Gradient

03 / 11
Statuario

Statuario

Massa Carrara · Vena Chiara

04 / 11
Statuarietto

Statuarietto

Monte Altissimo · Seravezza

05 / 11
Bardiglio Chiaro

Bardiglio Chiaro

Carrara · Gris Clair

06 / 11
Bardiglio Scuro

Bardiglio Scuro

Seravezza · Gris Profond

07 / 11
Portoro Extra Gold

Portoro Extra Gold

La Spezia · Monte Santa Croce

08 / 11
Portoro White

Portoro White

La Spezia · Monte Santa Croce

09 / 11
Portoro Ice

Portoro Ice

La Spezia · Monte Santa Croce

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Portoro Blue

Portoro Blue

La Spezia · Monte Santa Croce

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The Maison

From the Mountain
to the Land

Keturah was born from a conviction: that the spaces we inhabit shape how we feel, how we breathe, how we live. Before it became a name in stone, Keturah was a vision rooted in Dubai — designing residences where biology, wellness, and architecture converge to serve one thing: the human being.

Every material in a Keturah project is chosen for how it makes a person feel. When we searched for marble worthy of that standard, no supplier could guarantee the origin, the chain, or the soul of the stone. So we went to the mountain ourselves — to the Alpi Apuane of Tuscany and the cliffs of Portovenere in Liguria.

Keturah Stones exists because we believe natural materials carry something that engineered surfaces never will — millions of years of silence, pressure, and transformation. Stone is not decoration. It is the earth offering calm to those who choose to listen.

Today we supply our own developments and a private clientele of architects worldwide, by allocation only. There is no showroom. This is the only place where our stones appear.

Lugano, CH

Headquarters

Massa Carrara, IT

Extraction & Atelier

Dubai, UAE

Where it started

By Allocation

Architects & private clients

Marble block before the Apuan Alps

Origin

Our Two Quarries

We hold direct access to two extraction sites — one in the Apuan Alps of Tuscany for white and grey marbles, one near Portovenere in Liguria for the rare Portoro. Every slab can be traced to the exact block and the exact day it left the mountain.

Cava Coltelli quarry in the Alpi Apuane

Cava Coltelli

Alpi Apuane · Massa Carrara · Tuscany

The Carrara marble quarries have been mined since the Roman Empire, in the mountains of the Apuan Alps above the city of Carrara. This is where Michelangelo climbed in 1501 to hand-select the block for his David.

Our extraction site at Cava Coltelli supplies all the white and grey marbles in our collection. Each block is documented with a dimensional survey, density check, and photographic archive before it leaves the quarry face.

Stones from this quarry

Bianco Carrara · Bianco Venatino · Bianco Venato · Statuario · Statuarietto · Bardiglio Chiaro · Bardiglio Scuro

Portoro marble block, Monte Santa Croce

Monte Santa Croce

Near Portovenere · La Spezia · Liguria

Portoro is one of the most famous Italian black limestones, known for its characteristic golden-yellow veins on a deep black ground. It has been extracted near La Spezia since Roman times, when it was used in the ancient city of Luni.

Today only a handful of active Portoro quarries remain on earth. Our access to Monte Santa Croce gives us one of the last direct sources of this extraordinary stone — a black Jurassic limestone threaded with gold calcite formed over hundreds of millions of years.

Stones from this quarry

Portoro Extra Gold · Portoro White · Portoro Ice · Portoro Blue

The Collection

Eleven Stones

Each stone is selected one by one at the quarry face. Most of what we see, we leave behind. This is not a catalogue — it is an inventory of what the maison offers this year, and only this year.

All stones are available in multiple finishes — polished, honed, brushed, sandblasted, and aged. Custom formats and cuts are produced at our atelier in Massa Carrara.


i — v · Les Blancs · Five white marbles from the Apuanes
Bianco Carrara

Bianco Carrara

Massa Carrara

Bianco Venatino

Bianco Venatino

Lasa · 1,567m

Bianco Venato

Bianco Venato

Apuanes

Statuario

Statuario

Vena Chiara

Statuarietto

Statuarietto

Monte Altissimo


vi — vii · Les Gris · Two deep greys from Carrara
Bardiglio Chiaro

Bardiglio Chiaro

Carrara · Gris Clair

Bardiglio Scuro

Bardiglio Scuro

Seravezza · Gris Profond


viii — xi · Noir & Or · Four rare Portoro from La Spezia
Portoro Extra Gold

Portoro Extra Gold

La Spezia · Monte Santa Croce

Portoro White

Portoro White

La Spezia · Monte Santa Croce

Portoro Ice

Portoro Ice

La Spezia · Monte Santa Croce

Portoro Blue

Portoro Blue

La Spezia · Monte Santa Croce

Craftsmanship

From the Mountain to the Room

No intermediary touches the stone. From the quarry face to the finished slab, the chain of custody is ours. Each piece is extracted with precision, transported under controlled conditions, and finished by hand at our atelier in Massa Carrara.

At the Wall

At first light, a quarry chief walks the front. Blocks are chosen one by one. Most of what he sees, he leaves behind.

Certified

Dimensional survey, density check, photographic archive. A passport follows each block from the wall to the atelier.

Cut

Primary cutting in Massa Carrara. The diamond wire advances at a rhythm the cutter adjusts by ear. A single cut takes a day, sometimes two.

Finished

Polished, honed, brushed, sandblasted, or aged. The edge profile is drawn before cutting begins. Each finish requires its own week.

Crated & Delivered

Individual felt-lined crates. Chain of custody maintained from Livorno to the architect. A site chief attends every installation.

Hand finishing with chisel
Hand finishing · Atelier de Massa
Marble dust after the diamond wire
After the diamond wire · Late afternoon
0Intermediaries
11Stones
2Quarries

Begin the Conversation

One architect per project.
One stone per room.

Write to us with a brief — the room, the surface, the light you imagine for the stone. We respond within three working days and meet, in Lugano or Massa, when one of our stones is the right answer.

Keturah Swiss SA · Lugano

Via San Gottardo 53
6900 Lugano, Switzerland

+41 79 451 84 90

Keturah Stones S.R.L. · Massa

Via Degli Oliveti 110
54100 Massa (MS), Italy