1 x Pretty Medical Grade Titanium Hinged Ring With A 4mm Flat Backed Bezel Set Genuine Amethyst Crystal Thickness of Bar - 1.2mm (16g) Internal Diameter of Ring - 8mm or 10mm Great for a septum, or daith piercing - if this sizing suits your personal piercing :) This item will be sent Recorded/Tracked, and will need a signature upon delivery.