Lab Grown Alexandrite Stud Earrings handcrafted in solid gold. Two lab grown alexandrites total 3.5 ct for both earrings combined. Round cut. Post with friction back to fasten. Size: 7.1 x 7.1 mm (0.28 x 0.28 in). Material: 9ct Gold. Total metal weight: 1.4 gr. 2 round cut lab grown alexandrites (7 x 7 mm) = 3.5 ct total for pair. Colour: Colour Changing. Stone cut: Round Cut. Anniversary: 55th Anniversary. Birthstone: June.