About us
Based in Valais, Unique Onyx is a company specializing in high-end marble craftsmanship.
From the careful selection of stones to their custom implementation—through precise surveys and technical drawings— Unique Onyx elevates raw material into timeless masterpieces.
Each creation is a one-of-a-kind piece, shaped with passion and expertise to enhance your living spaces.
The partners
Marc Kaiser
Maître tailleur de pierre
Dimitri Schrepfer
Economiste d’entreprise
David Gay des Combes
Marbrier
Showroom
At the gateway to the Trient Valley, just outside Martigny, a showroom designed for architecture and design professionals.
Come and explore the finest marbles, onyx, travertines, quartzites, granites, and semi-precious stones, carefully sourced from Switzerland and around the world.
Access is by appointment, offering you the opportunity to browse a comprehensive materials library and select the perfect stone for your project—ensuring every detail aligns with your vision.
Portes intérieures sur cadre invisible en Quartzite Mont blanc