4cm Because this is a handmade item by an amateur, there may be imperfections such as burrs, scratches, air bubbles, and overflowing resin during the production process (>_<") If you are looking for perfection, please refrain from purchasing. Please check the images and only purchase if you understand. (*^^*) Can be made into either a hair tie or a brooch♬ If there is no comment, it will be a hair tie. #resin #accessories #hair accessories