One of Titaniums most unique properties is biocompatibility. It will cause no irritation or discomfort to the wearer Titaniums vibrant colours are achieved by passing an electric current through the metal. This creates a clear oxide layer on the surface which defracts & reflects white light, absorbing some colours of the spectrum & allowing others to shine through. Its unaffected by Chlorine or Salt water & as strong as Steel but far lighter - named after the Greek God 'Titan' - son of the earth These beautiful pendants are colourful, lightweight & will be much admired