14K White Gold Emerald Leverback Earrings Emerald, in a simple and classic setting, is the centerpiece of these earrings. The leverback earrings contain two prong set 6 X 4MM created oval cut emerald birthstones. The leverback earrings are crafted of cool, gleaming 14K solid white gold. The length is 5/8" (16mm) and the width is 7/16" (11mm). Emerald is May's birthstone.