Cushion Cut Alexandrite & White Topaz Ribbon Earrings in solid 9ct white gold. Size: 5.8 x 5.8 mm (0.23 x 0.23 in). Material: White Gold. Total metal weight: 2.6 gr. Cushion cut alexandrite (8 x 8 mm, grade AAA) = 5 ct total for pair. Round cut white topaz (1 x 1 mm) = 0.34 ct total for pair. Colour: Colour Changing. Stone cut: Cushion Cut. Occasion: Wedding, Mother's Day. Anniversary: 55th Anniversary. Birthstone: June.