Cushion Cut Sapphire & Diamond Ring in solid two-tone gold. Size: 19.1 x 19.1 mm (0.75 x 0.75 in). Material: Two-Tone Gold. Total metal weight: 3.5 gr. Cushion cut sapphire (9 x 7 mm) = 3 ct total. Round brilliant cut diamond (1.1 x 1.1 mm, G colour, SI1 clarity) = 0.44 ct total. Colour: Blue. Stone cut: Cushion Cut. Anniversary: 5th Anniversary, 45th Anniversary. Birthstone: September.