14k Yellow or White Gold Textured Bezel Set CZ Heart Stud Earrings with Child Safe Screwbacks These earrings are made of solid 14k gold and and fine quality cubic zirconia stones. Our cubic zirconia is bright and clear with an unmatched sparkle, so it will easily convince others it's the real thing. The earrings measure 4mm (0.16 in) x 4mm (0.16 in), the weight of the earrings is 0.4g, the length of the post is 8mm.