Bioplast barbell navel piercing with 2 multi-faceted, spherical crystal stones (5/8 mm), with a coating. Stone Colour: WhiteThe two balls are decorated with Swarovski Elements and have an epoxy resin coating to prevent the crystals being damaged or falling off.Thickness: 1.6 mmThe Bioplast Bar can be unscrewed at both ends Bioplast is bio-compatible, meaning it is completely harmless to body tissue.Bioplast speeds up the healing process (when compared with other materials).Bioplast is the best possible material around today to make body jewellery from.