Each earring comes with a stud ( front ) and a earring stopper (back) attached to a dangle or a shape. This style gives a "behind the ear" dangle rather than a busy dangle in front of the ear, giving a two dimension effect.
Earring stud: Stainless steel
Metal dangle: Stainless steel
Turquoise gemstone bead. ( Blue green )
Measurements: See last picture.