The ruby earrings are 14k white gold. The rubies are natural and are 3.8 millimeters round. Each ruby weighs .25 carats for a total carat weight of .50. The posts and clutch backs are also 14k. The rubies are held in with four prongs. Ruby is the birthstone for July. The item weighs 1.0 grams. I will provide a earring box with the item. If you decide to purchase these earrings I will also include a box.