Take two halves of the blade and glue them together using superglue or epoxy. Follow example in the GIF above. Leave for glue to set.
Now take the gold insert rings and glue them into the main body of the Chakram like shown above. You can use either Superglue or Epoxy glue for this. Leave the glue to set and you got yourself a ready Chakram. When it is in parts, it is easier to sand and paint the Chakram, therefore do that before assembly should you wish to make it more realistic.
Hope you enjoy your new Xena Chakram.