To those who are reading this post, lemme update some of the info.
As of this date, both the triv and the minimum skill in experimental mode are 350 for those two cleric items. If using the regular tradeskill window then there is no 350 min...at least not for jewelcraft. I assume alchemy is working the same way.
There was no minimum skill before RoF2, at least none that I know of, and so we should expect a bugfix. This has already been reported.
Its possible that there are other items that also have been given a minimum if in experimental mode. Report it if you find it.
Keep in mind that you don't need 350 base skill. You can simply get your skill to 305 and then equip your toon with the appropriate grandmaster item.
Or else ask in ooc if there is someone who can do the combine for you. My mage Jaton will do it for free.