Sterling Silver Green Amethyst, and White Topaz Ring Stunning 5 1/2 carat green amethyst stone. Enhanced with bright white topaz stones (1/4-carat total weight). Set in classic silver, this fashionable ring stands out from the crowd. 30-day money-back guarantee on every purchase. At Amour, we can offer incredible value because we are involved in every aspect of the creation process and travel the globe for the best prices on diamonds, pearls, and gemstones.