14k Gold Plated with Ruby Red Cubic Zirconia 3-Stone Cluster Heart Stud Earrings. Celebrate any February birthday or special occasion with these brightly polished 14k gold plated stud earrings, the birthstone for February. Princess and round brilliant cut ruby red cubic zirconias in triple clusters add a unique look. Shiny heart-shaped halos frame these glittering stones, exuding romance. Butterfly backs keep these heart studs secure, making them effortless to wear at any time.Measurement 10mm