For purely aesthetic applications a large portion of the visual effect is dictated by the particle size of the pigments. At small particle sizes, the individual pigments are less well defined and so an overall reflective sheen is seen at the correct loading levels. At higher particle sizes, each individual pigment particle is clear, creating a sparkle effect to the eye. The colour palette of these pigments stays within the silver white of silver. Further elemental options are available by use of other metals. For example, a layer of elemental gold can be added to the pigment to achieve a golden shimmer effect.