The Tension mirrors are created from natural stones. The shape of each stone is formed the way rocks naturally fracture and break along their veins and fissures. By preserving the stone off-cuts from quarries in its raw form, and then fusing them with opposing, highly polished glass surfaces, the resulting pieces poetically and provocatively position itself on a line between design and art. Therefore each mirror will always be entirely unique. Katharina sources the rocks from all over the world, she keeps a large collection of stones at her studio in East London.