This is super general so I’ll avoid the template.
Armourer trophys give jewelcrafting boosts, since there are no separate jewelcrafting trophys.
The Lifestyle projects (town board related) should therefore also give +5 gearscore for crafted jewellery when you have the Inspire Armorers project running. IF not that, add a separate jewelcrafting project. At the moment, Jewelcrafting is therefore the only profession not having the buff available.