the beads are glass. I wouldn't say they are extremely fragile but they will break. The chain is thin but sturdy. However it is chain and like they say "a chain is only as strong as its weakest link". This is not something I would give to a young child.
I hope this is okay to post. I would be willing to trade 2 rosaries (ones not listed) of your choice for a barbie, skipper, or kelly doll. I can send pics.