The alignment of a diamond's facets, or symmetry, also has a strong effect on diamond brilliance. Each facet is like a mirror. When the facets are symmetrically aligned, all of that reflected light is focused directly at your eye. In the illustration to the left, the diamond on the left has poor symmetry and the facets do not align. As a result, light is misdirected within the diamond and brilliance is lost. The diamond on the right is a Blue Nile Signature Diamond, its facets are symmetrically aligned and cut to standards that ensure its brilliance is emitted evenly.