Five colourful glass spheres of different sizes are exhibited on a specially built display table and shelves. As the viewer moves in relation to the work, the glass spheres shift in hue. This effect, which Eliasson has employed in many of his glass works over the last fifteen years, is achieved by applying slivers of translucent paint to the surfaces. The solid glass interiors act as lenses that expand the colour so that they fill the spheres and seem to radiate out from within. Viewers see a different colour entirely, depending on their angle of view, and the work changes as they move around it.

The sizes of the spheres and their positions on the shelves are determined by the Fibonacci sequence, a mathematical formula related to the golden ratio that has been known at least since medieval times. The sequence often occurs in growth patterns in nature, and can be found, for example, in the spirals of sunflowers, pinecones, and snail shells.