The Lavaliere Art Nouveau Pendant was made between 1890 to 1914. It is marked 14k and has been tested with nitric acid and a "Kee" tester. The piece weighs 2.9 grams. It measures 2 1/4" x 3/4". Set at the bottom are three purple briolette cut natural amethyst with an approx total weight of 5 .00 cts. Set above the center amethyst is a small round natural pearl. Set above the pearl is a blue natural topaz. There is a loop at the top to accommodate a chain.