Cushion Cut Swiss Blue Topaz Quad Pendant Necklace in solid sterling silver. Size: 16 x 25.4 mm (0.63 x 1 in). Material: Sterling Silver. Total metal weight: 4.82 gr. Cushion cut Swiss blue topaz (5 x 5 mm) = 2.5 ct total. Colour: Blue. Stone cut: Cushion Cut. Occasion: Wedding, Formal Dress, Mother's Day. Anniversary: 4th Anniversary. Birthstone: November.