pearl nymph
Ever since Necro Summoner was added been trying to build mine and have spent hours farming for gems to different builds without luck. Like seriously farming Bone Spear/Spikes? here have your 10th Shield Bash Gem.
With my suggestion you would get to craft the gem you need at somepoint with the mats.
mighty anchor
For the playtest, I don't see why not. But when the game releases, I expect drop rates to be significantly lower, especially for gems and cards. Currently cards are 1% and gems 0,3%. I would expect both to be 1/10th of their current drop rate, since it's far too easy to get both right now. After a few hours of farming in a spot, I'll have dozens of cards and usually a few of each gem. They are supposed to be hard to get, and now the problem is everyone has them, and everyone is selling them, driving their value to the ground.