The ostrich egg is part of my lamp.It took a fall an broke the shell. What type of glue would I use to repair it.Or just use polycoat finish on the outer shell as a glue?

The ostrich egg is part of my lamp.It took a fall an broke the shell. What type of glue would I use to repair it.Or just use polycoat finish on the outer shell as a glue?

I am new on this site and I just saw your question unanswered.
Beaten Egg white is good to glue light material. Parchmin, paper, eggs etc...