The Hoop Gold & White SapphireA classic hoop elevated with sapphires is a wardrobe essential. The Hoop earring is made from 18k gold vermeil with bezel set 2. 75mm white sapphire stone. Gold vermeil is the hard plating process of applying 18k gold over sterling silver for a high quality and long lasting finish to your jewellery. These hoops are made to be worn alone or stacked with the midi and huggie for a curated ear. Plating: 18k Gold Material: 925 Sterling Silver Stone: 2.