About this 3D model
Simple creoles and ring for fast and simple printing. Only additional parts needed are butterfly earring studs (https://www.amazon.de/gp/product/B07S8RS57V/ref=ppx_yo_dt_b_asin_image_o03_s00?ie=UTF8&psc=1). I cutted the plate off and glued the stud in. I used some epoxy resin to get some nice shiny jewellery.