If Crovie actually even works on this game anymore, I have a suggestion.
Gem Chance should be partly based on how difficult the thing you're mining is to mine based on your current mining damage and stuff.
For instance, my current damage stats allow me to auto-mine up to Platinum with a single hit. Everything lower than that should have less of a chance to drop a gem for that damage stat, and everything higher should have a greater chance to drop a gem or multiple gems.
Guys. If you're really having trouble finding the shop and other features, maybe you should start on a new file and replay the Tutorial. Actually, you should probably do that every time a big update is released. Just a tip from me.
Just when you think you've mastered the art of jumping through windows, one spawns below you and your natural instinct when you reach the end of the platform is to jump. Jumping guarantees failure in that instance.