THOMAS FEUERSTEIN workcycle ULTRAMARINA brings together an ensemble of sculptures, paintings, and objects. Here, diatoms from Lake Traunsee and limestone from local mining are processed into a new pigment. A method developed by biologist and chemist Thomas Seppi forms the basis for the chemical synthesis of “Traunseeblau.” This color pigment, derived from substances all found locally in Karbach, varies—like the lake itself—between vibrant ultramarine, turquoise, green, and ashy gray. In homage to the history of science and art, the process has been submitted to the Austrian Patent Office. “Traunseeblau” references Germany’s historically first patent, granted to Johannes Zeltner (Patent No.1, 1877) for the chemical production of ultramarine as a substitute for lapis lazuli, as well as Yves Klein’s IKB.