Swiss Blue Topaz Stud Earrings in solid 9ct white gold. Size: 6.4 x 12.7 mm (0.25 x 0.5 in). Material: White Gold. Total metal weight: 0.76 gr. Round cut Swiss blue topaz (6 x 6 mm) = 2.05 ct total for pair. Colour: Blue. Stone cut: Round Cut. Occasion: Wedding, Mother's Day. Anniversary: 4th Anniversary. Birthstone: November.