Switzerland · Quartzite
also known as Valser Quarzit, Vals Gneiss, Therme Vals Stone
One of the most architecturally celebrated stones of the 20th century: made world-famous by Peter Zumthor's Therme Vals (1996), where its layered silver-grey planes define every surface of the spa. Vals quartzite forms in fine horizontal strata that split cleanly along bedding planes, creating a naturally riven surface. Highly durable, frost-resistant and suited for both interior luxury applications and demanding exterior cladding. Availability is limited; material is closely managed by the municipality of Vals.
Type-level physical facts shown. Per-lot lab values (absorption, flexural strength) confirmed at quotation.
Peter Zumthor used it exclusively throughout the Therme Vals (Switzerland, 1996), one of the most praised buildings in recent decades. The stone's layered grey planes and the way it accepts water and light made it inseparable from the architecture's identity.
In limited quantities. The quarry is community-owned and production is controlled. Projects requiring significant volumes should plan well in advance and source through Swiss stone distributors.