Princess Cut Alexandrite Pendant Necklace in solid sterling silver. Size: 9.7 x 19.1 mm (0.38 x 0.75 in). Material: Sterling Silver. Total metal weight: 4.42 gr. Princess cut alexandrite (8 x 8 mm, grade AAA) = 3 ct total. Colour: Colour Changing. Stone cut: Princess Cut. Occasion: Graduation. Anniversary: 55th Anniversary. Birthstone: June.