Gold Body Jewellery. 9ct Gold Belly Bar (Navel Bar). 1.6mm gauge. Available in lengths 8mm & 10mm (6mm bottom ball and 4.5mm top ball, unscrew one end). For help with sizing please read our Sizing Guide. Suitable for use in healed Navel Piercings (Belly Piercings). This gold body jewellery is made from high quality 9 carat yellow gold. Shop @ Tattooed Lady offers Free UK Delivery on this Gold Body Jewellery.