Cushion Cut Sapphire & White Topaz Ring in solid 9ct white gold. Material: White Gold. Total metal weight: 3.0 gr. Cushion cut sapphire (8 x 8 mm) = 3 ct total. Round cut white topaz (1 x 1 mm) = 0.28 ct total. Colour: Blue. Stone cut: Cushion Cut. Occasion: Wedding, Mother's Day. Anniversary: 5th Anniversary, 45th Anniversary. Birthstone: September.