Rocks Couture Collection 9ct Yellow Gold Hoop Earrings With A Curved Tube Shape.Curved Hoop Earrings. A curved tubing is used to create these interesting hoop earrings. Fitted with a hinged bar closure. Add a pair of stud earrings from our 'Rocks Couture' Collection to create a unique layered style all of your own. Size: Approximately 15x15mm.