Hello and welcome to my little guide on how to get Small Experience Crystals.
First let us start off with; what are these things? Aren't they useless because they only give out a small amount XP to my Eidolon? That's what I thought at first but as your progress in the game, especially when you're level 40, you are given an option to evolve your Eidolon into a better and finer familiar. And what you need to achieve such dream are Small Experience Crystals and a Hero Emblem (you don't have to worry about this, just link with your Eidolon and poof, you have one).
And so let us jump straight to the point. These crystals are tough to find especially when you are already high level. But no worries, you can share these crystals in your bank from your low level characters.
