Ariel Gordon Diamond Dust Hoops Earring in Yellow Gold: Made to order. Ready to ship in 1-2 weeks. Sized like a stud, but shaped like a tiny hoop, these dainty 14-karat gold earrings are punctuated with a single diamond and if multiple piercings are involved, look especially adorable side-by-side.14k gold, diamond Hoop diameter: 0.50".