I got 148 gems, but then I got lost in the endless ocean...
Haha, so sad! Enjoy your gems! (Beware that the shopkeeper will [SPOILER REMOVED].)
Oh, I'm glad I didn't see that before figuring it out on my own. I kinda think you shouldn't spoil it in the comments :)
I played again and learned about the shopkeeper's intriguing understanding of capitalism, and then I played again and got everything ^__^
This is a strange and lovely game. Walks the line between "game that you hate" and "it's impossible to insult the kitten" very well.
High praise! Thanks. (I've removed the spoiler from my earlier comment.)
