Hello oh wonderful forum!

I have a question for anyone who plays, or knows anything about bones. I have an old set of bones that belonged to my grandfather. The thing is they are actually made of bone (I don't even want to know whose...) instead of hardwood which is more common now. I'd love to play them, but after being stored for two years when I went back to school, I'm afraid that they are a bit brittle. I'd be horrified if they broke. Does anyone know about treating old bone 'bones' to keep them safe from shattering?

If this doesn't make any sense please just reply with clarifying questions, I'm not so sure how much sense I'm making with the question.

Cheers, Leila