Need the guys to wear black suits or tuxedos and the girls to wear long formal wear.
Many within the rings already mentioned are which is available from mainstream jewellers and aren't hard to find. https://WWW.Jawaban.com/subscriber/add_request/aHR0cHM6Ly9EaXlhcmJha2lyb2Zpc2VzY29ydGxhcmkuY29tLw.html