Talk:Attack the Light/@comment-28584561-20150406035628/@comment-26282034-20150406053329

The Grumpyface blog posted a guide on where to find all the red gemstones here; http://grumpyfaceblog.tumblr.com/post/115602566638/those-darn-gemstones-a-mini-guide

The one I missed the first time round was the one in the 4th world becuase the wall looks like a normal wall from the perpective its at but isn't a serect room, so it'll still say you're at 100% for that level even if you don't find it.