Cushion Cut Green Amethyst & CZ Cocktail Ring in solid sterling silver. Material: Sterling Silver. Total metal weight: 3.7 gr. Cushion cut green amethyst (8 x 8 mm) = 2 ct total. Round cut cubic zirconia (1 x 1 mm) = 0.74 ct total. Colour: Green. Stone cut: Cushion Cut. Occasion: Engagement, Wedding, Mother's Day. Anniversary: 6th Anniversary. Birthstone: February.