I keg most fruit except blueberries and cranberries which stack up really quickly. I slip those into the dehydrator as there's no way I'm going to be able to work my way through them all otherwise and I really dislike selling unprocessed crops.
Fire Quartz is actually a pretty good Crystalarium gem as they're needed for dehydrators and are great for Qi's prismatic grange, for both Red and Purple (refined quartz)