I have a bad habit of still wanting to make suggestions even tho dev interest in this game is pretty low. Can't help myself apparently. Figure, the best thing I can do is to keep it all in one place. so I'm going to throw my suggestions in here.
Also trying a new way to make suggestions more engaging. It all is mostly just an excuse to learn some new stuff in photoshop, gets some practice making icons, etc.
Suggestion #1: Lapidary
I always felt like gemstone system was unfinished, I try to add to it a bit here: