Cushion Cut Aquamarine & Diamond Pendant Necklace in solid 9ct white gold. Size: 9.7 x 19.1 mm (0.38 x 0.75 in). Material: White Gold. Total metal weight: 0.93 gr. Cushion cut aquamarine (9 x 7 mm) = 1.63 ct total. Round brilliant cut diamond (1 x 1 mm, H colour, SI1 clarity) = 0.08 ct total. Colour: Blue. Stone cut: Cushion Cut. Occasion: Wedding, Mother's Day. Anniversary: 19th Anniversary. Birthstone: March.