Tanzanite & Diamond Ring in solid 9ct white gold. Size: 19.1 x 12.7 mm (0.75 x 0.5 in). Material: White Gold. Total metal weight: 7.0 gr. Oval cut tanzanite (11 x 9 mm) = 3.89 ct total. Round brilliant cut diamond (1.1 x 1.1 mm, H colour, SI1 clarity) = 0.39 ct total. Colour: Blue. Stone cut: Oval Cut. Occasion: Wedding, Mother's Day. Anniversary: 24th Anniversary. Birthstone: December.