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How can I mend two broken pieces of bone jewelry together? - hawaiian bone fish hook necklace

I have a necklace of Hawaiian fishhooks from bone age is real. Unfortunately, he broke into the top of the curve, where the chain connects to believe that there is a weakness. What is the best way to repair the parts where it could withstand a lot before it breaks again? I still think using an adhesive such as epoxy, but I think there is a better way to get, so to extend the life of this chain.

I love this song and I (a) for an extended period, as a part of me. It is therefore of great sentimental value. I hope to use again. All suggestions will be greatly appreciated. Thank you!