Does Create Firestone work with Imbuements?

[Obeliske]

As the title, I know poisons don't work with imbuements, but I haven't seen many people who run with stones, and I'd like to know from somebody who actually has tried it rather than wasting my time rolling it and then finding out it doesn't work. Any help would be greatly appreciated.

On that note can the different shields all be used together? Mage/Warlock/Shaman?