London Blue Topaz Pendant Necklace in solid 9ct white gold. Size: 6.4 x 19.1 mm (0.25 x 0.75 in). Material: White Gold. Total metal weight: 1.9 gr. Pear cut London blue topaz (12 x 8 mm) = 3 ct total. Colour: Blue. Stone cut: Pear Cut. Occasion: Wedding, Mother's Day, Graduation. Anniversary: 4th Anniversary. Birthstone: November.