The earrings are made of 14k white gold , this includes the posts and backs. The earrings measure 11 x 7 millimeters. The topaz are pear shaped and measures 6 x 4 millimeters. The total carat weight of the blue topaz are 1.00cts. The topaz are held in with three prongs. The earrings weigh 1.6 grams and I will provide a nice earring box.