14k Yellow or White Gold Open Flower with Simulated Ruby Earrings with Child Safe Screwbacks These earrings are made of solid 14k gold and are stamped "14K," featuring high quality simulated ruby. Our simulated ruby has a rich, beautiful color and an unmatched sparkle, so it will easily convince others it's the real thing. Ruby is the birthstone for July, making this a great gift for your loved ones with July birthdays. The earrings measure 5mm (0.2 in) x 5mm (0.2 in), the weight of the earrings is 0.4g, the length of the post is 8mm.