Daum embraces an environmentally-friendly and equitable approach by using bio-ore in the production of this lea the rack turtle sculpture. To meet the major challenges of sustainable development, Daum is committed to an ethical approach to metal sourcing, which is necessary for the coloring of the crystal. with the motivation to combine technical mastery and sustainable development, Daum's Nancy atelier collaborates with local biotechnology startup Econick to obtain bio-sourced metals, produced from hand-grown plants, without deforestation, without the use of pesticides, equitable for local populations, wile enhancing the soil by increasing its fertility. Daum wishes to highlight our present ecological crisis by choosing the lea the rack turtle, an endangered species. One of the largest species of turtles and present in all the oceans of the planet, the survival of the lea the rack turtle is seriously threatened by pollution and urbanization.