They measure 14mm.

Made with  surgical steel posts.
Plastic.
 
Sealed with resin. Stud backs have been attached wit resin for extra strength.
These are 100% handmade. They are printed & i cut each piece out by hand.
 
100% Aussie made.
 
Artwork is purchased from indapendant artists or designed by myself.
*We do not use mass produced planar resin from china*