Forever Us Two Stone Trillion Ring Sterling Silver Sizes 5 to 9 in Various Gemstones Features 1.50 carat total weight of 7mm trillion genuine Amethyst and 5mm trillion genuine Amethyst gemstones Prongless bezel setting is perfect for active lifestyles All gemstones and 925-Stamped Sterling Silver metal used are authenticated and as marked. Includes Certificate of Authenticity. For Amazon-fulfilled orders Certificate is available upon request. Birthstone for the month of February Perfect gift for Birthdays, Mothers Day, Valentines, Anniversary, Bridesmaids, Graduation, Christmas or just about any other gift giving occasion.