How can I repair a necklace that is broken?

To repair a broken necklace, you can use jewelry glue or a small jump ring to reattach the broken parts. If the necklace has a clasp that is broken, you can replace it with a new one. If the necklace is made of beads, you can restring them using jewelry wire or thread. If you are unsure how to repair it, consider taking it to a professional jeweler for assistance.