The Italian Marble Collection

Timeless elegance,
quarried from Italy.

Ten curated varieties of Italian marble from the Coltelli Quarry in Minucciano and Monte Santa Croce in La Spezia, the smallest, slowest scale of the KETURAH world.

Keturah Stones

An edition of objects,
quiet as architecture.

Keturah Stones is the smallest expression of the Keturah world, a curated collection of Italian marble drawn from the heart of Tuscany and Liguria. Pieces that age with the wall, the room, the family.

Every variety is shaped by the same architects, the same atelier, and the same belief: that a beautiful surface is also a slower one. Marble is geology made into architecture, the unhurried record of pressure, time, and the land itself.

The Source

The quarries
of Carrara.

The Coltelli Quarry sits in Minucciano, in the Apuan Alps above Carrara, the same vein of mountains that has supplied Italy's sculptors and architects for two thousand years. Monte Santa Croce, near La Spezia, is the source of the Portoro family, the rarest of the marbles in the collection.

Every block selected for KETURAH is reviewed at the quarry by the architects who will use it. Nothing leaves the mountain without being seen first.

The Apuan Alps above Carrara, the source of the Italian Marble Collection
44.10° N · 10.18° E · Minucciano · Tuscany
The Collection

Ten varieties.
One geology.

From contemporary Bardiglio to the legendary Portoro Gold
Bardiglio, blue-gray Italian marble swatch
01 · Bardiglio
Coltelli Quarry · Minucciano

Contemporary blue-gray elegance with delicate veining. A sophisticated choice for modern interiors requiring a touch of cool, understated luxury.

Venatino, soft white Italian marble swatch
02 · Venatino
Coltelli Quarry · Minucciano

Soft white background with delicate, wispy gray veining. A timeless classic from the Carrara family that brings light and sophistication to any space.

Venato, linear veined Italian marble swatch
03 · Venato
Coltelli Quarry · Minucciano

Pronounced linear veining creating elegant directional flow. A dynamic visual texture that guides the eye and adds movement to architectural surfaces.

Venato Cross Cut, cloud patterned Italian marble swatch
04 · Venato (Cross Cut)
Coltelli Quarry · Minucciano

The alternative cut, revealing soft, cloud-like patterns. The cross cut transforms linear veins into gentle, organic movements.

Bianco Carrara, quintessential white Italian marble swatch
05 · Bianco Carrara
Coltelli Quarry · Minucciano

The quintessential Italian marble. A uniform white-to-grey background with gentle veining, the long-held standard of classical beauty and versatility.

Schist, metamorphic flowing wave stone swatch
06 · Schist
Coltelli Quarry · Minucciano

A rare metamorphic stone with dramatic flowing wave patterns. Its geological formation creates a sense of movement and depth unmatched by traditional marble.

Schist Opposite Cut, layered sedimentation stone swatch
07 · Schist (Opposite Cut)
Coltelli Quarry · Minucciano

A striking alternative cut of the Schist, revealing a different dimension of its complex geological structure. The opposite cut emphasises the layered sedimentation.

Statuarietto, fine grey veined Italian marble swatch
08 · Statuarietto
Coltelli Quarry · Minucciano

A prestigious marble with a bright white background and intricate, fine grey veining. It bridges the gap between the classic Carrara and the exclusive Statuario.

Portoro White, high-contrast black and white marble swatch
09 · Portoro White
Monte Santa Croce · La Spezia

A sophisticated black marble featuring striking white veining. The high contrast creates a bold, graphic statement, perfect for feature walls and statement pieces.

Portoro Gold, black marble with gold veining swatch
10 · Portoro Gold
Monte Santa Croce · La Spezia

The pinnacle of Italian luxury. A deep, velvety black traversed by brilliant gold veins. One of the most precious and sought-after marbles in the world.

The Pinnacle

Portoro Gold,
the rarest cut.

Quarried only from Monte Santa Croce above La Spezia, Portoro Gold is the most precious of Italian marbles, a deep black geology threaded with gold veining unrepeatable from one block to the next.

Each slab is selected at the quarry, then cut, polished and finished in collaboration with KETURAH's architects. The grain is followed, never fought.

The Process

From quarry
to residence.

A four-step journey from the mountain to the home
Selection

Each block is reviewed at the Coltelli or Monte Santa Croce quarry by the architects who will use it. Nothing leaves the mountain without being seen first.

Cut

Slabs are cut to follow the grain. Linear, cross-cut, or matched-book, every decision is taken in service of the room the marble will eventually enter.

Finish

Polished, honed, leathered, or brushed. The finish is matched to the lighting, the touch, and the intended life of the piece.

Installation

Installed by KETURAH-trained stonemasons under the supervision of the project architect. The wall, the floor, the bath, finished as architecture, not cladding.

The mountain remembers. The block records. The wall holds it all.

Discover
Return

To the Beginning