Just started the game, and I'm really enjoying it so far, but I've come to a wall banger. Well, more specifically, a bunch of walls that won't open.
I got the purple resonance gem from the sanctuary almost immediately after I had access to it, and I keep running into purple crystal walls in the first few areas. But they don't open. They just glow purple for a couple seconds... then stop. I've tried more than a few button combinations, searched the help section, and even waited there for half a minute. I tried equipping the crystal resonance gem, but it's not possible. Am I missing something? Is there a move I need in conjunction with the crystal? Google is giving me no love.