Alexandrite Pendant Necklace in solid sterling silver. Size: 6.4 x 25.4 mm (0.25 x 1 in). Material: Sterling Silver. Total metal weight: 4.32 gr. Marquise cut alexandrite (12 x 6 mm, grade AAA) = 2.5 ct total. Colour: Colour Changing. Stone cut: Marquise Cut. Occasion: Mother's Day. Anniversary: 55th Anniversary. Birthstone: June.