If by stats you mean their measurements then here you go. If you are referring to some other stats, there aren't any as far as I'm aware.
https: //i.imgur.com/EWVbNSH.png
Yes you can get rubies from chests but not a significant amount unless you are opening in bulk. If you are just opening a few at a time you probably wouldn't even notice. As I said in a previous post I opened 1000 chests yesterday and only got 80 rubies.