When we attacked those wasp beings earlier, we also tried to do all of the group-only quests in that dungeon. You’ll recognize those by the description in parentheses after the quest title, e.g. “(small group”). One of the two small group quests I took gave this reward:
That’s one über earring. The thing I had before had +2 Intelligence, so you can imagine how much more phat this particular lewt is. Sure, it’s a level 17 item, but I got it at level 13 and I think I’ll do just fine with that up to level 20 or so. This is another great way Vanguard rewards grouping: The group quest rewards seem several times better than what you can get solo.
Yay for groups!