Princess Cut Alexandrite Pendant Necklace in solid 9ct gold. Size: 12.7 x 19.1 mm (0.5 x 0.75 in). Material: Gold. Total metal weight: 3.49 gr. Princess cut alexandrite (8 x 8 mm, grade AAA) = 3 ct total. Colour: Colour Changing. Stone cut: Princess Cut. Occasion: Wedding, Mother's Day. Anniversary: 55th Anniversary. Birthstone: June.