The economy_trades\stonemason.json file for 1.11.0.9 Beta vanilla behavior pack has a typo on line 199 that gives 14 polished diorite (instead of 4, as with polished granite and polished andesite) for 1 diamond.

There doesn't seem to be a new download for the 1.11.0.10 Beta vanilla behavior pack, and no new features were added, so I assume there has been no change to this file.