Swiss Blue Topaz & CZ Galleria Ring in solid 9ct white gold. Size: 6.4 x 6.4 mm (0.25 x 0.25 in). Material: White Gold. Total metal weight: 2.5 gr. Round cut Swiss blue topaz (8 x 8 mm) = 2.5 ct total. Round brilliant cut cubic zirconia (1.3 x 1.3 mm) = 0.2 ct total. Colour: Blue. Stone cut: Round Cut. Occasion: Engagement, Wedding, Mother's Day. Anniversary: 4th Anniversary. Birthstone: November.