Vintage Art Deco Purple Gem Clip On Earrings Add a touch of vintage elegance to your collection with these Vintage Art Deco Purple Gem Clip On Earrings featuring amethyst colored gemstones in an art deco setting. The center amethyst gemstones are \emerald cut. The earrings measure 3/4" x 3/4". These earrings are from an estate and in excellent condition.