This Lobe Cuff is 2.5 micron plated 18ct Gold on Sterling Silver with White Cubic Zirconia stones. Composition: 18ct Gold on Sterling Silver with Rainbow Cubic Zirconia stonesColour: GoldDimensions:The cuff has an internal length of 17mm and and a gap of 8mm to loop over your lobe. Please see guide for jewellery care: Jewellery Care & Sizing | Rosie Fortescue Jewellery