A terrazzo born of the sea
Each year, French shellfish farming generates close to 250,000 tonnes of shells from oysters, mussels and scallops, nearly all of which end up buried in technical landfill. Ostrea responds to this silent waste from a workshop near Rennes, by reinventing terrazzo — the mineral composite born in fifteenth-century Venice — replacing crushed marble with shell shards from the Atlantic coast. The result: a mineral, living material, where each tabletop carries the memory of a shoreline.
55 % shells. 0 % resin.
The Ostrea formulation rests on a precise balance: 55 % shell flakes (oysters, scallops) and 45 % of a patented mineral matrix, with no resin and no petroleum-based binder. The process is resolutely low-tech: shell collection and drying, calibrated flake grinding, cold assembly, natural 30-day cure — without firing or kiln — then polishing and surface treatment against stains. The tabletop shows 7.5 kg of CO₂ equivalent per m², five times less than ceramic. Density 2,200 to 2,400 kg/m³, close to natural stone.
Made in Brittany
Ostrea is 100 % conceived, sourced and manufactured in France. Shells come exclusively from French shellfish beds — Arcachon basin, Brittany coast, Norman shoreline — collected directly from oyster and mussel farmers in short circuits. Production takes place at the workshop near Rennes, following circular-economy principles. From the oyster park to the tabletop delivered to your home, traceability remains strictly regional.
Four finishes, two collections
Each Ostrea tabletop is a unique piece, declined in two collections.
Rivage Collection — Ostrea Saint-Jacques (pinkish, pearlescent shards) · Ostrea Huitres (blue-grey, luminescent).
Marine Collection — Ostrea Noir Anthracite (deep, light speckling) · Ostrea Vert d'eau (soft mineral hue, unique on the market).
Patented technology.
Made to measure
Each tabletop is cut and assembled to order, to the exact dimensions of your project. From 60 to 240 cm in length, our configurator lets you choose the size, the linoleum colour and the edge profile that match your need precisely.