Here is my version of Talosian necklace from Star Trek Discovery. The chain is designed and one piece about 180mm long and you will probably need 3 pieces all together. The best is to use hair dryer to bend the chain around neck after gluing all pieces together.
To make links that can be joined together is quite easy to design but nightmare to print. Many pieces that need gluing together. Nonetheless I will upload that soon for those who have time :) \//