Cushion Cut Swiss Blue Topaz & CZ Halo Crown Pendant Necklace in solid sterling silver. Size: 12.7 x 28.7 mm (0.5 x 1.13 in). Material: Sterling Silver. Total metal weight: 4.77 gr. Cushion cut Swiss blue topaz (10 x 8 mm) = 3.25 ct total. Round cut cubic zirconia (1 x 1 mm) = 0.57 ct total. Colour: Blue. Stone cut: Cushion Cut. Occasion: Engagement, Wedding, Mother's Day. Anniversary: 4th Anniversary. Birthstone: November.