First: 14" gunmetal chain with a large hammered gunmetal magnetic ball to take the necklace on and off

Second: 14" gunmetal chain with a gunmetal pave magnetic ball to take the necklace on and off

Third: 14" gunmetal chain with a black pave magnetic ball to take the necklace on and off

Fourth: 14" gunmetal chain with black and crystal pave magnetic ball to take the necklace on and off