Swiss Blue Topaz Mini Owl Pendant Necklace in solid sterling silver. Size: 6.4 x 16 mm (0.25 x 0.63 in). Material: Sterling Silver. Total metal weight: 3.17 gr. Round cut Swiss blue topaz (7 x 7 mm) = 1.8 ct total. Round cut Swiss blue topaz (2 x 2 mm) = 0.2 ct total. Colour: Blue. Stone cut: Round Cut. Occasion: Wedding, Mother's Day, Graduation. Anniversary: 4th Anniversary. Birthstone: November.