When it comes to Tank Jewellery Traits there are a few decent options but Harmony and Infused are the two best options.
Harmony is the overall best jewellery trait but this is highly dependant on whether you have enough synergies provided often enough to use to gain the resources and you also need to have enough max stats to gain those resources without losing or wasting any by using synergies while you’re resources are full. For Trials you should virtually always have enough synergies but in dungeons, especially pick up or random groups,
Infused is the much better option when you don’t have any synergies. You’ll get less resources than you do from Harmony but it’s the safer options for unorganised groups where they might not provide any synergies.