This pair of Art Deco Earrings are not marked but were tested with nitric acid and a "kee" tester. The earrings are solid platinum and the clips are 14k white gold. They do not have posts but could be added. The pair weigh 6.5 grams. It the pair are approx 2.00 cts total weight of old European cut natural diamonds. The range from SI1 to SI3 and G to I in color. The earrings measure 9/16" X 1/2" and are in excellent condition.