Inner Diameter :8mm They are selling as a single earring. Material: Gold, Lead-free & nickel-free,not contain harmful Elements.Hypoallergenic,Comfort fit. Idea gift: Perfect choice for valentine’s Day, anniversary, birthday party, Christmas Day, Wedding, Graduation, Christening. Warm Prompt: 1. Before showering, take out the name necklace & keep it in a safe place , 2. Avoid solvents or chemicals like perfume or soap. Dry chain necklace with a clean towel if gets wet 3. Pls Clean by a soft polishing cloth. 4. Not wearing it while sweating a lot, sleeping & bathing. Gold Hoop Earrings, Cz Hoop Earrings, Minimalist Dainty Hoops, Tiny Huggie Rose Gold, Silver