The polyhedron that acts as the second point of focus was derived from a three-dimensional aperiodic tiling system. Rhombohedral forms were combined to create a complex structure that is elusively symmetrical. Some of the faces, which are all identical golden rhombi, incorporate transparent panes of birefringent material. When viewed in isolation, the polyhedron appears clear and empty, but positioned between the polarisers, it comes to life. Juxtaposed at various angles to one another, the faces conjure a range of colours that change as the form rotates and as the viewer moves around to examine the work.