RS Pure. Modern designs that complete your outfit and complement your personality. Follow your own star with our diamond single stud earring. Crafted in 14kt yellow gold, this simple pushpin style features a flat back that won't poke or jab while you're taking a quick nap or getting a full night of beauty sleep. Insert the backing first into a pierced ear, then slide the front post inside to secure. Designed for 24/7 wear, this easy earring is ideal for an active lifestyle and can be worn without worry during workouts, travel and all of your daily activities. Suitable for cartilage piercings. Diamond star single stud earring.