Cushion Cut Alexandrite Tier Halo Ring in solid sterling silver. Size: 14.2 x 14.2 mm (0.56 x 0.56 in). Material: Sterling Silver. Total metal weight: 4.0 gr. Cushion cut alexandrite (9 x 9 mm, grade AAA) = 4.25 ct total. Colour: Colour Changing. Stone cut: Cushion Cut. Occasion: Wedding, Formal Dress, Mother's Day. Anniversary: 55th Anniversary. Birthstone: June.