Ascended acessories upgrades
The same place you buyt the accessories sells infusions as well as the merchant golem at the Fractals. Take care to buy the same kind of infusion as your slot: offensive for offensive etc.
Especially: Do NOT buy two of the same accessory. One character can only wear one.
thanks, that was useful. I almost bought the wrong thing
Ascended accessories are cheaper with guild commendations though.
If you buy them with laurels, you also need 9g worth of globs.