0.03 Carat(2mm) Cz Cubic Zirconia Stud Piercing in 14k Yellow Gold Top grade Cubic Zirconia 14k solid gold post and 14k gold filled push backs a pair of studs and basket stamp setting 2mm diameter x 9mm length(8mm bar), 0.5mm post thickness This stud is very small and tiny. Multipurpose stud for ear piercing.