These earrings depict standard Starfleet combadge from Star Trek - The Next Generation. You will, of course, need to source the ear wires/ear clips
If you don't have a 3D Printer and you want a set of these produced, please send me a DM and we can arrange for me to print one for you :)
Or you can order one, complete with the ear wires, made to order in my Etsy store - www.etsy.com/uk/shop/enterprisexddesign