Sapphire & CZ Octagon Ring in solid sterling silver. Material: Sterling Silver. Total metal weight: 4.1 gr. Emerald cut sapphire (12 x 7 mm) = 4.5 ct total. Round cut cubic zirconia (1 x 1 mm) = 0.5 ct total. Colour: Blue. Stone cut: Emerald Cut. Occasion: Engagement, Wedding, Mother's Day. Anniversary: 5th Anniversary, 45th Anniversary. Birthstone: September.