^ You're going to be in a real treat for what that earring is going to be used for. I can guarantee you that. I haven't figured out the glowing aspect of it just yet though. However, I do have my hunches but they're spoiler related. Hehe... ^___^
@ LadyEmpress (and anyone else interested): I edited in the remaining 2 cents and another theory into my spoiler-fest post. For a new raw chapter, it still gives me questions anyways.