So I've been playing this game since it was released on iOS and I can count the amount of gems I've been given by neighbors on one hand. Of course I can't blame TL for that. I usually get the bulk of my gifts close to reset time and even though I decline a bunch, hoping a gem will appear, it pretty much never does
It stinks because when I used to play Pet Hotel Story I was rolling in gems, getting them from neighbors left and right. Not only that but the goals in PHS also gave us a way to get gems.
I'm glad that goals appeared in this game, but the only rewards were coins and XP to increase the value of our homes. At level 30 I'm doing just fine money-wise, and I think I buy enough items to increase my home value without any help. So I'm hoping, pleading, that the next set of goals give gem rewards.