Hundreds of people are randomly all over Vanadiel daily killing random mobs, either for trials, xp, fun, or aggro. Often does it result in a geode drop. Hundreds drop daily on each server. There doesn't need to be weather. This is an MMO, not a solo game. And a reason they can be bought. I'm basically quoting what the devs are thinking to themselves but cannot say. Devs "You're lazy and cheap, would you like some cheese with that wine?".