London Blue Topaz Ring in solid sterling silver. Size: 22.4 x 12.7 mm (0.88 x 0.5 in). Material: Sterling Silver. Total metal weight: 2.6 gr. Pear cut London blue topaz (9 x 6 mm) = 1.5 ct total. Colour: Blue. Stone cut: Pear Cut. Occasion: Mother's Day. Anniversary: 4th Anniversary. Birthstone: November.