The earrings are made of 14k white gold. The diamonds are lab grown and measure 5.8 millimeters round and weigh 1.54 carats total weight. The diamonds have a "F" color and an "VVS2 clarity grading. The diamonds are set in a three prong martini setting. The posts are also 14k white gold along with the ear backs. The posts are not threaded. We will provide a earring box.