The Collection
Sculptural Works
From intimate desk objects to monumental garden installations, each work is unique and never reproduced.
Ancient stones shaped by millennia of current, reborn as enduring works of fine art. Each piece carries the memory of water.
Our Philosophy
We do not carve stone — we listen to it. Each river stone speaks its own ancient language of sediment, pressure, and time.
Every stone in our collection is hand-selected from rivers across the world — the Arno, the Yangtze, the Colorado. Only stones with exceptional character are chosen.
Our master sculptors work with the stone's natural grain, enhancing rather than overriding. The river's work is the foundation; human hands are the final conversation.
Stone that survived ten thousand years of current will outlast anything we build. Our pieces are investments in permanence, objects that only deepen with time.
The Collection
From intimate desk objects to monumental garden installations, each work is unique and never reproduced.
The Studio
Our atelier sits on the banks of the Upper Dordogne, where stones have been gathering for ten thousand years. We begin every piece by listening — spending hours with the stone before a single tool is raised.
The studio employs three master sculptors, each with over twenty years of experience in lithic art. Apprentices spend their first year doing nothing but stone identification and sorting. Only then are tools introduced.
We work without electricity where possible. Diamond hand-files, water-fed grinding wheels, and traditional Japanese polishing stones. The silence in the atelier is deliberate. Stone demands patience.
The Craft
A process measured in weeks, not hours. Each step honors both the stone's history and its future.
Twice yearly, our sculptors travel to river sources across Europe and Asia. We wade through shallow water, handle hundreds of stones, and select only those with exceptional character — a particular density, strata pattern, or surface story.
Selected stones dry for a minimum of six weeks in our outdoor stone garden. We observe how they change as moisture leaves, how light plays across the surface at different hours. Only then do we assign each stone to a sculptor.
Before any material removal, the sculptor draws on the stone's surface with chalk — a dialogue about what the stone already is, and what it might become. These drawings are photographed and archived.
Hand tools only. We remove as little material as necessary, following the grain lines laid down by the river over millennia. The process can take from three days to three months depending on the complexity of the form.
Final polishing with progressively finer Japanese water stones. Each finished work receives a unique geological report, documentation of its river origin, and a signed certificate of authenticity.
Our Story
Founder Edouard Masse, a former geologist, creates his first river stone sculpture during a survey expedition on the Dordogne. The work sells within a week to a Paris gallery.
STRATUM studio formally established on the riverbank in Beaulieu-sur-Dordogne. First apprentice trained. First solo exhibition at Galerie Denise René, Paris.
Three monumental STRATUM pieces installed at the Musée d'Art Moderne. Featured in Architectural Digest and Wallpaper as defining voices in contemporary lithic art.
First collection sourced entirely from Yangtze River basin stones. Partnership with Kyoto's finest lacquer masters creates the acclaimed River & Urushi series.
Launch of a permanent archive of over 2,000 documented river stone specimens — a geological and artistic resource open to researchers and collectors worldwide.
Recognition
Bespoke Works
Every STRATUM commission begins with a conversation about space, light, and intention. We work with architects, interior designers, and private collectors to create pieces that belong exactly where they are placed.
Commissions typically take 3–9 months from initial brief to delivery, depending on scale. We provide regular photographic updates throughout the process.
Desk objects from €2,400 · Garden installations from €18,000
Site visit and geological consultation included for all major commissions
International shipping with custom crating to any destination