14K White Gold Ball Stud Earrings 2, 3, 4, 5, 6, 7, 8, 9, 10, 12MM These earrings are made entirely of 14k gold and are stamped "14K." With 14K White Gold Push-Backs Classic Ball Earrings Choosing Earring Size: Unsure what size earrings to buy? 5mm is the perfect size that will look great on most people. If you are purchasing earrings for secondary ear piercings, we would recommend the 3mm size. Sizes larger than 5mm are great for making a statement, and sizes smaller than 3mm are perfect for when you want just a hint of shine.