Effortless elegance meets everyday comfort with these birthstone stud earrings. Designed with a shorter post length and secure screw-on ball-style backs, they promise lightweight, hassle-free wear. Say goodbye to pokes and snags—these studs are perfect for cartilage and lobe piercings alike, making them headphone-ready and nap-approved. Made of 14K gold plated sterling silver with authentic birthstones. Stud size: 5mm. Stone size: 3.5 mm. Ball size: 4mm. Hypoallergenic, nickel and lead-free; Tarnish resistant. How to wear Ball-back Studs? 1. Begin by unscrewing the ball from the back of the stud. 2. Gently insert the stud into your piercing. (Keep in mind that the post is slightly thicker than a standard post, so take your time during this step.) 3. Align the hole in the ball with the post and use one hand to hold the stud in place while carefully twisting the ball clockwise onto the post. Continue twisting until the ball is securely tightened and cannot turn further. (To remove, simply twist the ball counterclockwise.) 4. Enjoy worry-free wear—whether you're sleeping, swimming, working out, or exploring the world. These studs are designed for comfortable 24/7 use. 5. For added peace of mind, we recommend occasionally checking to ensure the ball backs are still securely fastened.