Mestige Meridian Necklace and Earring Set Stud Dimensions:8 mm(H) x 8mm(W); Pendant Dimensions:12mm(H) x 7.5mm(W) Crystal Size for pendant and earrings:140 x 1.5mm Surgical steel earring posts with butterfly clasp backing Necklace chain length 17 inches + 3 inch extender, lobster claw closure Rhodium color plated brass hardware