I hadn't mentioned it. but I figured out the Dark crystal thing. It's "connected" to the other crystal (I assume) but not necessarily actually a "second place" nor what "the other crystal" moved.... kinda cool, I also reiterate I love their new look and more intense glow.
Side Note: The Dark and Light Crystals, I think they still begin as "unknown" and have to be touched to be "identified" - The other 3 spawn identified now. (Finally, the fire and ice ones are legitimately named...) Not sure if you desire this to remain or not - But sometimes I feel... irked? seeing the light crystal nameless for the 8123458190th time.
I also like the additional ore associated with the above. I mean, I imagine the number of veins is relatively the same (and I wish there was always more and more, just hundreds of them, everywhere, just have to afford/work/etc to unlock more of them.) But back when I noticed where the Dark Crystal was, I was in awe, not from the actual location, but just going in, expecting nothing, and then BOOM WHAT ?!? THAT'S!.... BUH WHHA??? OH ME GEEEEZZZZ ... That moment was nice.